| 1921 | Pop3 | Company Product |
| 1922 | Popcorn Equipment & Supplies | Company Product |
| 1923 | Poplar Elements | Company Product |
| 1924 | Poppet High Flow Valves | Company Product |
| 1925 | Poppet Valves | Company Product |
| 1926 | Poppet-Type | Company Product |
| 1927 | Porcelain Enamel Colours | Company Product |
| 1928 | Porcelain Products | Company Product |
| 1929 | Porcelain Tiles | Company Product |
| 1930 | Porous Metal Bearings | Company Product |
| 1931 | Porous Metal Filters | Company Product |
| 1932 | Porous Sealers | Company Product |
| 1933 | Port Handling Equipment | Company Product |
| 1934 | Port Manually | Company Product |
| 1935 | Port Master | Company Product |
| 1936 | Port Normally | Company Product |
| 1937 | Portable | Company Product |
| 1938 | Portable (2.5hp - 20hp) | Company Product |
| 1939 | Portable (2.5hp To 20hp) | Company Product |
| 1940 | Portable Air Compressors | Company Product |
| 1941 | Portable Air Conditioners | Company Product |
| 1942 | Portable Air Conditioning | Company Product |
| 1943 | Portable Air Coolers | Company Product |
| 1944 | Portable Aircond | Company Product |
| 1945 | Portable Airconds | Company Product |
| 1946 | Portable Balancers | Company Product |
| 1947 | Portable Band Saws | Company Product |
| 1948 | Portable Banknote Detectors | Company Product |
| 1949 | Portable Bar Forming Machines | Company Product |
| 1950 | Portable Boring Machine | Company Product |