| 1967 ROBERT Automatic Propeller Pitch Control Adaptor |
| 1961 COLEMAN Automatic Variable Pitch Propeller |
| 1954 DE Automatic Screw Pitch Change Locking |
| 1945 RAY Automatic Propeller Pitch Control Art |
| 1934 KELM Automatic Variable Pitch Propeller Art |
| 1935 REED Automatic Variable Pitch Propeller Art |
| 1935 TAYLOR Automatic Variable Pitch Propeller |
| 1953 FOSS Automatic Variable Pitch Propeller Art |
| 1936 ZELIE Automatic Variable Pitch Propeller |
| 1938 BOYD Automatic Variable Pitch Propeller Art |
| 1931 STOVER Horn Automatic Pitch Control Patent 17296 |
| 1936 AXEL NELSON Automatic Change Pitch Propeller |
| 1951 MORELOCK Automatic Pitch Change Propeller |
| 1949 MOUNT Automatic Adjustable Pitch Propeller |
| 1938 LILLEY Automatic Variable Pitch Propeller |
| 1960 SIKORSKY Automatic Pitch Control Release |
| 1934 LAMBERT Automatic Variable Pitch Propeller |
| 1936 CHARLES Automatic Change Pitch Propeller |
| 1933 WILLIAM Automatic Variable Pitch Propeller |
| 1936 WILLIAM Automatic Variable Pitch Propeller |
| 1969 BROOKS Automatic Control Variable Pitch Propellers |
| 1970 PHILLIPS ADRIAN Automatic Variable Pitch Propeller |
| 1954 EVANS Automatic Variable Pitch Propeller |
| 1939 STEPHENS Automatic Variable Pitch Propeller |
| 1936 GEMENY Automatic Variable Pitch Propeller |
| 1965 BROWN Automatic Variable Pitch Propeller |
| 1933 LAMBERT Automatic Variable Pitch Propeller |
| 1952 FRED Air Screw With Automatic Pitch Mechanism |
| 1931 STOVER Automatic Pitch Control Horns Art |
| 1970 PHILLIPS Automatic Variable Pitch Propeller |
| 1934 WILLIAM Automatic Variable Pitch Propeller |
| 1934 HARRISON Automatic Variable Pitch Propeller |
| Brand New Automatic Pick and Place for 0402, Fine Pitch |