| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 221 | Variable pitch propeller | US6777236 | 1936-03-09 | US2126813A | 1938-08-16 | REID LELAND E |
| 222 | Propeller | US3708135 | 1935-08-20 | US2111947A | 1938-03-22 | SHACKELFORD MARSHAL P |
| 223 | Screw propeller | US8640036 | 1936-06-20 | US2104306A | 1938-01-04 | HARNETT MCLEOD GEORGE |
| 224 | Adjustable area propeller blade | US9408936 | 1936-08-03 | US2074807A | 1937-03-23 | REED ELLIOTT W |
| 225 | Propeller | US58319831 | 1931-12-26 | US1945633A | 1934-02-06 | FORSHEE JOSEPH M |
| 226 | Aeroplane power plant | US1942674D | US1942674A | 1934-01-09 | ||
| 227 | Propeller | US27182028 | 1928-04-21 | US1899650A | 1933-02-28 | WILLIAM STELZER |
| 228 | Propeller | US60898232 | 1932-05-03 | US1890120A | 1932-12-06 | RALPH KLINGER |
| 229 | Four blade propeller | US61444032 | 1932-05-31 | US1888056A | 1932-11-15 | JACK VERZILLO; AUGUSTINE YODICE |
| 230 | Airplane propeller | US39028329 | 1929-09-04 | US1862207A | 1932-06-07 | NICHOLAS TUZZO |
| 231 | Airplane propeller | US27641028 | 1928-05-09 | US1853607A | 1932-04-12 | BARKER FERREBY ROLLA |
| 232 | Screw propeller | US27906628 | 1928-05-19 | US1851098A | 1932-03-29 | OSCAR HERMANSON |
| 233 | Propeller | US33030629 | 1929-01-04 | US1725482A | 1929-08-20 | ADOLPH SCHERTZ |
| 234 | Propeller | US10390126 | 1926-04-22 | US1593942A | 1926-07-27 | GAETANO LIPARI |
| 235 | Propeller | US73627924 | 1924-09-06 | US1540728A | 1925-06-02 | WEIDINGER WILLIAM G G |
| 236 | Propeller | US59755222 | 1922-10-28 | US1512273A | 1924-10-21 | CALLAHAN JOSEPH J |
| 237 | Propeller | US29775219 | 1919-05-17 | US1494964A | 1924-05-20 | STOLLER HUGH M |
| 238 | Propeller | US31265619 | 1919-07-23 | US1424672A | 1922-08-01 | OGRISSEK GEORGE A |
| 239 | Propeller | US50935621 | 1921-10-21 | US1422109A | 1922-07-11 | WILSON LAMBERT FRANK |
| 240 | Propelling or bearing screw of variable pitch | US45259921 | 1921-03-15 | US1402646A | 1922-01-03 | EDOUARD PERRIN |
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