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 |
|---|---|---|---|---|---|---|
| 221 | Convertible gun | US26718363 | 1963-03-22 | US3198076A | 1965-08-03 | STONER EUGENE M |
| 222 | Single shot or semi-automatic firearm | US25054963 | 1963-01-10 | US3155004A | 1964-11-03 | WEATHERBY ROY E; JENNIE FRED L |
| 223 | Automatic guns having a fixed feed mechanism and slidable in a cradle | US79903559 | 1959-03-12 | US3082667A | 1963-03-26 | ROBERT RAMSEYER |
| 224 | Recoil-action machine gun | US59030356 | 1956-06-08 | US2900877A | 1959-08-25 | SLOAN MCCLENAHAN DOUGLAS |
| 225 | Prefabricated gun receiver | US53577555 | 1955-09-21 | US2868083A | 1959-01-13 | WINDSTRUP ROBERT F |
| 226 | Means for the take-down of a firearm | US42364854 | 1954-04-16 | US2797515A | 1957-07-02 | PAGETT HARRY L |
| 227 | Machine pistols | US26586552 | 1952-01-10 | US2749642A | 1956-06-12 | ERIK SAETTER-LASSEN |
| 228 | Firearm with aluminum barrel and receiver | US2736117D | US2736117A | 1956-02-28 | ||
| 229 | Securing means | US70310946 | 1946-10-14 | US2568735A | 1951-09-25 | HOPKINS EDWARD W |
| 230 | Breechblock lock for firearms | US67512446 | 1946-06-07 | US2555379A | 1951-06-05 | SIMPSON CLARENCE E |
| 231 | Firing mechanism for submachine guns | US69051846 | 1946-08-14 | US2548622A | 1951-04-10 | SAMPSON FREDERICK W; HYDE GEORGE J |
| 232 | Buffer mechanism for firearms | US72133247 | 1947-01-10 | US2491492A | 1949-12-20 | GAIDOS ALONZO F |
| 233 | Operating spring retainer for firearms | US5900248 | 1948-11-08 | US2476328A | 1949-07-19 | SIMPSON CLARENCE E |
| 234 | Venturi vise | US69817946 | 1946-09-20 | US2475384A | 1949-07-05 | FOWLER KENNETH R |
| 235 | Automatic and semiautomatic carbine | US40977141 | 1941-09-06 | US2389631A | 1945-11-27 | MOORE WILEY T |
| 236 | Firearm | US49525643 | 1943-07-19 | US2373622A | 1945-04-10 | WILLIAMS DAVID M |
| 237 | Method of disassembly | US52984144 | 1944-04-06 | US2373141A | 1945-04-10 | ORLOFF GEORGE H |
| 238 | Self-loading firearm | US45974942 | 1942-09-26 | US2372339A | 1945-03-27 | ROEMER WILLIAM C |
| 239 | Self-loading repeating firearm | US36120840 | 1940-10-15 | US2342824A | 1944-02-29 | SWEBILIUS CARL G |
| 240 | Rifle | US35194940 | 1940-08-09 | US2342283A | 1944-02-22 | HYDE GEORGE J |
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