| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 21 | Breech block mechanism | US39376241 | 1941-05-16 | US2398453A | 1946-04-16 | WILLIAM SUMMERBELL |
| 22 | Breechblock operating mechanism | US27498639 | 1939-05-22 | US2245622A | 1941-06-17 | WILLIAM SUMMERBELL |
| 23 | Spring mechanism for automatic firearms | US45816630 | 1930-05-31 | US1852057A | 1932-04-05 | MOORE FREDERICK T; CHRISTIAN PFEIFFER |
| 24 | Automatic gun | US2507425 | 1925-04-21 | US1709162A | 1929-04-16 | WESTERVELT WILLIAM I; WILLIAM SUMMERBELL |
| 25 | Automatic gun | US14455926 | 1926-10-27 | US1674370A | 1928-06-19 | EMILIEN METHLIN NICOLAS |
| 26 | District of co | US1482118D | US1482118A | 1924-01-29 | ||
| 27 | Automatic firearm | US37582420 | 1920-04-22 | US1346012A | 1920-07-06 | WILLIAM GABBETT-FAIRFAX HUGH |
| 28 | Automatic or semi-automatic firearm | US30875719 | 1919-07-05 | US1338649A | 1920-04-27 | WILLIAM GABBETT-FAIRFAX HUGH |
| 29 | Breech-block-operating device. | US17490617 | 1917-06-15 | US1291677A | 1919-01-14 | HYDE JOSEPH |
| 30 | Semi-automatic gun. | US1911661168 | 1911-11-18 | US1091361A | 1914-03-24 | LENDER FRANZ |
| 31 | Breech mechanism of semi-automatic and quick-firing guns. | US1913760351 | 1913-04-11 | US1088213A | 1914-02-24 | DAWSON ARTHUR TREVOR; BUCKHAM GEORGE THOMAS |
| 32 | Semi-automatic gun. | US1913757048 | 1913-03-26 | US1076875A | 1913-10-28 | DRIGGS WILLIAM H; DRIGGS MARY EDDY |
| 33 | Breech-loading ordnance. | US1911639489 | 1911-07-20 | US1072435A | 1913-09-09 | DAWSON ARTHUR TREVOR; BUCKHAM GEORGE THOMAS |
| 34 | Breech-piece for guns. | US1910587720 | 1910-10-18 | US1008223A | 1911-11-07 | VOELLER KARL |
| 35 | Recoil-gun. | US1908440014 | 1908-06-23 | US988791A | 1911-04-04 | LEHMANN HERMANN |
| 36 | Recoil-gun. | US1909493700 | 1909-05-03 | US987462A | 1911-03-21 | HERMSDORF MAX |
| 37 | Breech-loading ordnance. | US1898681920 | 1898-05-27 | US818420A | 1906-04-24 | DASHIELL ROBERT BROOKE; DASHIELL ELEANOR RIDOUT |
| 38 | Semi-automatic gun. | US1905254827 | 1905-04-10 | US805272A | 1905-11-21 | DRIGGS WILLIAM HALE |
| 39 | Breech-loading ordnance. | US800757D | US800757A | 1905-10-01 | SAMUEL N MCCLEAN | |
| 40 | Breech mechanism for quick-firing cannon. | US1903173743 | 1903-09-18 | US787528A | 1905-04-18 | MONDRAGON MANUEL |
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