Air Conditioning .............................................................................................................................. 126
Air Ships .......................................................................................................................................... 126
Aeroplane/Aviation ......................................................................................................................... 126
Alcoholic Beverages ........................................................................................................................ 126
Alternating Current ......................................................................................................................... 126
Alternative Energy Related ............................................................................................................. 126
Altimeter ......................................................................................................................................... 126
Aluminum Foil - Aluminum Manufacturing Process ....................................................................... 126
Ambulance ...................................................................................................................................... 126
Anemometer ................................................................................................................................... 126
Answering Machines ....................................................................................................................... 126
Antibody Labeling Agents - Antigen and Antibody ......................................................................... 126
Antiseptics ....................................................................................................................................... 126
Apple Computers ............................................................................................................................ 126
Aqualung ......................................................................................................................................... 126
Arc Transmitter ............................................................................................................................... 126
Archimedes Screw ........................................................................................................................... 126
Armillary Sphere ............................................................................................................................. 126
Artificial Heart ................................................................................................................................. 126
Asphalt ............................................................................................................................................ 126
Aspirin ............................................................................................................................................. 126
Assembly Line ................................................................................................................................. 126
AstroTurf ......................................................................................................................................... 126
Atari Computers .............................................................................................................................. 126
ATM - Automatic Teller Machines .................................................................................................. 126
Atomic Bomb .................................................................................................................................. 126
Atomic Clock ................................................................................................................................... 126
Audio Tape Recording ..................................................................................................................... 126
Auto-Tune ....................................................................................................................................... 126
Automated Electrified Monorail Systems ....................................................................................... 126
Automatic Doors ............................................................................................................................. 126
Automobile ..................................................................................................................................... 126
Baby Carriage .................................................................................................................................. 126
Bakelite ........................................................................................................................................... 126