| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | Vector calculating board | US40892941 | 1941-08-30 | US2300401A | 1942-11-03 | BASLER DONNAN E; KELLEY HAROLD W; WATKINS BRUCE O |
| 82 | Calculating device | US36541440 | 1940-11-13 | US2296799A | 1942-09-22 | ROSIN AXEL G |
| 83 | Probability computer | US32566040 | 1940-03-23 | US2295616A | 1942-09-15 | WILLIAMSON CHARLES G |
| 84 | Calculating machine | US35772040 | 1940-09-21 | US2285774A | 1942-06-09 | HORNER EDGAR E |
| 85 | Calculator | US34472040 | 1940-07-10 | US2283375A | 1942-05-19 | LAUTZENHISER FRED B; SALVATORE COLACUORI |
| 86 | Calculator | US29238039 | 1939-08-29 | US2247531A | 1941-07-01 | THURSTON ARTHUR L; BEAUREGARD SWEENEY |
| 87 | Multiple velocity indicator | US31781540 | 1940-02-08 | US2244125A | 1941-06-03 | SIEFKER ARNO G |
| 88 | Calculator | US29237639 | 1939-08-29 | US2222925A | 1940-11-26 | WEST ALFRED P |
| 89 | Calculating or indicating device | US2222661D | US2222661A | 1940-11-26 | ||
| 90 | Calculating protractor | US14919237 | 1937-06-19 | US2190071A | 1940-02-13 | KEPPERS WILLIAM M |
| 91 | Roofing calculator | US4619135 | 1935-10-22 | US2112114A | 1938-03-22 | RAINBOLT KATHERINE D |
| 92 | Menstrual phase recorder and indicator | US72558134 | 1934-05-14 | US2049038A | 1936-07-28 | WALFRED ANDERSON CYRUS |
| 93 | Calculating device | US34886529 | 1929-03-21 | US1969296A | 1934-08-07 | VALLE ARIZPE HARMODIO A DE |
| 94 | Calculating device | US59569032 | 1932-02-29 | US1965062A | 1934-07-03 | WELLINGTON BARRETT R |
| 95 | Calculating system and apparatus therefor | US61766232 | 1932-06-16 | US1954723A | 1934-04-10 | CLOUD HARRY B |
| 96 | Production calculator | US1937277D | US1937277A | 1933-11-28 | ||
| 97 | Navigation calculator | US71253324 | 1924-05-12 | US1910093A | 1933-05-23 | COLVIN CHARLES H |
| 98 | Apparatus for the practice of celestial navigation | US1906752D | US1906752A | 1933-05-02 | ||
| 99 | Aircraft course calculator | US39916829 | 1929-10-12 | US1853740A | 1932-04-12 | OTTO MUELLER |
| 100 | Calculator | US1800752D | US1800752A | 1931-04-14 | ||
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