子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 201 | Composite gun barrels | US34019853 | 1953-03-04 | US2981155A | 1961-04-25 | AUTHONY PARLANTI CONRAD |
| 202 | Gun barrel | US58019856 | 1956-04-24 | US2935913A | 1960-05-10 | WILSON JOHN L |
| 203 | Gun barrel construction | US32505540 | 1940-03-20 | US2249899A | 1941-07-22 | HOGG JOHN W |
| 204 | Gun barrel | US17426237 | 1937-11-12 | US2238670A | 1941-04-15 | ANTONA TRAVERSI ROBERTO; GIOVANNI PEGNA |
| 205 | Composite gun barrel | US52493931 | 1931-03-24 | US1903295A | 1933-04-04 | KESSENICH GREGORY J |
| 206 | Gun | US52246631 | 1931-03-13 | US1866938A | 1932-07-12 | MCCANN GEORGE M |
| 207 | Ordnance | US21479227 | 1927-08-22 | US1745468A | 1930-02-04 | BARNES GLADEON M |
| 208 | Cannon | US13455826 | 1926-09-09 | US1696339A | 1928-12-25 | BLOOD EDWIN J |
| 209 | Rifle-barrel. | US26188418 | 1918-11-09 | US1299972A | 1919-04-08 | LINSCOTT CHARLES W |
| 210 | Gun. | US17730717 | 1917-06-27 | US1242719A | 1917-10-09 | OSTRANDER GEORGE N |
| 211 | Manufacture of barrels for shotguns and rifles. | US1359915 | 1915-03-11 | US1167233A | 1916-01-04 | WARNER FRANKLIN BROCKWAY |
| 212 | Means for repairing worn rifled guns. | US1913773637 | 1913-06-14 | US1127268A | 1915-02-02 | MALSTER JOHN CHARLES |
| 213 | Breech-laoding gun. | US1913761844 | 1913-04-17 | US1092763A | 1914-04-07 | BOURDELLES EMILE |
| 214 | Gun-barrel. | US1911666670 | 1911-12-19 | US1089079A | 1914-03-03 | RABBA HEINRICH |
| 215 | Tubular structure. | US1911609425 | 1911-02-18 | US1004142A | 1911-09-26 | BROWN JOHN H |
| 216 | A-tube or liner for ordnance. | US1908413032 | 1908-01-28 | US981095A | 1911-01-10 | MAXIM HUDSON |
| 217 | Firearm. | US1906298179 | 1906-01-27 | US837139A | 1906-11-27 | SMITH WILLIAM WILSON |
| 218 | Built-up gun. | US1898067974 | 1898-07-16 | US690066A | 1901-12-31 | LOVETT THOMAS J |
| 219 | Ordnance. | US1901054483 | 1901-04-05 | US689413A | 1901-12-24 | ROBERGE FRANKLIN PIERCE; ROBERGE ABIJAH MCDONALD |
| 220 | Gun. | US664848D | US664848A | 1901-01-01 | GLOVER GEORGE T | |
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