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