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 | Dirigible | US49473830 | 1930-11-10 | US1835260A | 1931-12-08 | CARLOS BARRERA |
| 202 | Airship propulsion | US49232430 | 1930-10-30 | US1833722A | 1931-11-24 | PROKOP PROKOP J |
| 203 | Centrifugal propeller for dirigible balloons | US33253729 | 1929-01-14 | US1827225A | 1931-10-13 | FERREBY ROLLA B |
| 204 | Dirigible construction | US22223927 | 1927-09-27 | US1821158A | 1931-09-01 | HOWLAND LEVI S |
| 205 | Expansion device for diagonals and bulkhead wires | US36645729 | 1929-05-27 | US1811122A | 1931-06-23 | OTTO GEISLER; SETH GEORGE W |
| 206 | Aircraft | US33919029 | 1929-02-11 | US1806316A | 1931-05-19 | RUSSELL THAYER |
| 207 | Airship | US37673429 | 1929-07-08 | US1806135A | 1931-05-19 | WARD WILLIS C |
| 208 | Airship | US34012029 | 1929-02-15 | US1802863A | 1931-04-28 | BALCH ARVEL M |
| 209 | Aircraft | US41650329 | 1929-12-26 | US1801834A | 1931-04-21 | ALLEN SHERMAN T |
| 210 | Nonrigid airship | US39537129 | 1929-09-26 | US1800174A | 1931-04-07 | KURT BAUCH; PAUL HELMA |
| 211 | Safety aircraft | US28995328 | 1928-07-02 | US1787293A | 1930-12-30 | WARD WILLIS C |
| 212 | Airship | US39705029 | 1929-10-03 | US1784775A | 1930-12-09 | LOUIS BALAZINSKI |
| 213 | Metallic airship of the rigid type | US18158427 | 1927-04-06 | US1780448A | 1930-11-04 | SLATE THOMAS B |
| 214 | Main ring for rigid airships | US38940029 | 1929-08-30 | US1779387A | 1930-10-21 | KARL ARNSTEIN |
| 215 | Dirigible airship | US39666329 | 1929-10-02 | US1778273A | 1930-10-14 | HARRY PARK; LITZENBERG WILLIAM R |
| 216 | Combination land and air machine | US22619927 | 1927-10-14 | US1776374A | 1930-09-23 | RONNING JACOB A; ADOLPH RONNING |
| 217 | Stabilized airship | US17070927 | 1927-02-24 | US1772161A | 1930-08-05 | FRANK SHORT |
| 218 | Dirigible | US38122829 | 1929-07-26 | US1766358A | 1930-06-24 | THAD ROSE |
| 219 | Bulkhead for airships | US36082229 | 1929-05-06 | US1763585A | 1930-06-10 | PAUL HELMA; KLEMPERER WOLFGANG B |
| 220 | Flying machine | US34254229 | 1929-02-25 | US1763409A | 1930-06-10 | COY ORSETT |
QQ群二维码
意见反馈
意见反馈