| 1921 | Portable Air Compressors | Company Product |
| 1922 | Portable Air Conditioners | Company Product |
| 1923 | Portable Air Conditioning | Company Product |
| 1924 | Portable Air Coolers | Company Product |
| 1925 | Portable Aircond | Company Product |
| 1926 | Portable Airconds | Company Product |
| 1927 | Portable Balancers | Company Product |
| 1928 | Portable Band Saws | Company Product |
| 1929 | Portable Banknote Detectors | Company Product |
| 1930 | Portable Bar Forming Machines | Company Product |
| 1931 | Portable Boring Machine | Company Product |
| 1932 | Portable Boring Machines | Company Product |
| 1933 | Portable Buildings | Company Product |
| 1934 | Portable CNC Cutting Equipment | Company Product |
| 1935 | Portable CNC Cutting Machines | Company Product |
| 1936 | Portable Cabin Containers | Company Product |
| 1937 | Portable Cabin, Site Office Container Leasing | Company Product |
| 1938 | Portable Cabins | Company Product |
| 1939 | Portable Calibrators | Company Product |
| 1940 | Portable Chairs | Company Product |
| 1941 | Portable Circular Saws | Company Product |
| 1942 | Portable Classroom Tables | Company Product |
| 1943 | Portable Cold Cut Machines | Company Product |
| 1944 | Portable Concrete Mixer Rental | Company Product |
| 1945 | Portable Concrete Mixer Repair | Company Product |
| 1946 | Portable Concrete Mixers | Company Product |
| 1947 | Portable Concrete Plants | Company Product |
| 1948 | Portable Concrete Vibrator | Company Product |
| 1949 | Portable Cut Off | Company Product |
| 1950 | Portable Data Collectors | Company Product |