| 1922 | Paper Bag | |
| 1923 | PC200 Excavators | |
| 1924 | Plaswood Signs | |
| 1925 | PHOENIX CONTACT, REPAIR AND SERVICES, TYPE : ENCO1 | |
| 1926 | Power Conductor System (Busbar) | |
| 1927 | Pecolift | |
| 1928 | Pendant Control 8 Button | |
| 1929 | Pendant Control 6 Button | |
| 1930 | Pendant Control 4 Button | |
| 1931 | Prospekt Strands Spare Parts | |
| 1932 | Prospekt Strands S 40 Me | |
| 1933 | Prospekt Strands S 40 M | |
| 1934 | Prospekt Strands S 40 | |
| 1935 | Prospekt Strands S 35 Me | |
| 1936 | Prospekt Strands S 35 M | |
| 1937 | Prospekt Strands S 35 | |
| 1938 | Prospekt Strands S 30 B M | |
| 1939 | Prospekt Strands S 30 B | |
| 1940 | Prospekt Strands S 30 F | |
| 1941 | Prospekt Strands S 30 MF | |
| 1942 | Prospekt Strands S 30 M | |
| 1943 | Prospekt Strands S 30 | |
| 1944 | Prospekt Strands S 25 B M | |
| 1945 | Prospekt Strands S 25 B | |
| 1946 | Prospekt Strands S 25 M | |
| 1947 | Prospekt Strands S 25 T | |
| 1948 | Prospekt Strands S 25 U | |
| 1949 | Prospekt Strands S 25 | |