| 1921 | Audio Visual Production | Company Product |
| 1922 | Audiometers | Company Product |
| 1923 | Audit Company Singapore | Company Product |
| 1924 | Audit Services | Company Product |
| 1925 | Auditorium Chairs | Company Product |
| 1926 | Auditorium, Theatre Chairs | Company Product |
| 1927 | Auditors | Company Product |
| 1928 | Auger Bits | Company Product |
| 1929 | Auger Filling Machine | Company Product |
| 1930 | Auger Presses | Company Product |
| 1931 | Augers | Company Product |
| 1932 | Augmentation Index | Company Product |
| 1933 | Augmentation Pressure | Company Product |
| 1934 | Augmented Reality | Company Product |
| 1935 | Augmented Reality Apps Development | Company Product |
| 1936 | Auman | Company Product |
| 1937 | Aurora 4 Port Serial Kits | Company Product |
| 1938 | Aussie Camping Hammock | Company Product |
| 1939 | Aussie Hammock | Company Product |
| 1940 | Austenitic Stainless Steel | Company Product |
| 1941 | Authorized | Company Product |
| 1942 | Authorized Dealer | Company Product |
| 1943 | Auto Air Vents | Company Product |
| 1944 | Auto Bandsaws | Company Product |
| 1945 | Auto Blowdown Valves | Company Product |
| 1946 | Auto Cartridge | Company Product |
| 1947 | Auto Change Over Relay | Company Product |
| 1948 | Auto Crankshafts | Company Product |
| 1949 | Auto Fans | Company Product |
| 1950 | Auto Feeder Conveyor System | Company Product |