| 1921 | Autochangeover Systems | Company Product |
| 1922 | Autoclavable | Company Product |
| 1923 | Autoclavable Bag | Company Product |
| 1924 | Autoclaved Aerated Concrete Panels | Company Product |
| 1925 | Autoclaves | Company Product |
| 1926 | Autocollimators | Company Product |
| 1927 | Autocut Control Card | Company Product |
| 1928 | Autogate | Company Product |
| 1929 | Autogate Sliding Motor | Company Product |
| 1930 | Automated Chain Lubrication | Company Product |
| 1931 | Automated Fuel Nozzle Grit Blast Machines | Company Product |
| 1932 | Automated Guided Vehicles | Company Product |
| 1933 | Automated Liquid Handling Workstations | Company Product |
| 1934 | Automated Shelving And Retrieval Systems | Company Product |
| 1935 | Automated Storage & Retrieval Systems | Company Product |
| 1936 | Automati Girth Welder | Company Product |
| 1937 | Automatic Air Release Valves | Company Product |
| 1938 | Automatic Aluminium Cut Off Saw | Company Product |
| 1939 | Automatic Batching System | Company Product |
| 1940 | Automatic Call Sequencer Telephones | Company Product |
| 1941 | Automatic Can Welding Machines | Company Product |
| 1942 | Automatic Carbide Circular Sawing Machine | Company Product |
| 1943 | Automatic Cartoning Machines | Company Product |
| 1944 | Automatic Chain Windlasses | Company Product |
| 1945 | Automatic Chassis Lubrication System | Company Product |
| 1946 | Automatic Chassis Lubrication System Automatic Controller | Company Product |
| 1947 | Automatic Closing Spring Hinges | Company Product |
| 1948 | Automatic Door | Company Product |
| 1949 | Automatic Door Operators | Company Product |
| 1950 | Automatic Doors | Company Product |