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| All Patents in class 417/243 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 706,979 | Aug. 12, 1902 | G.E. Martin | Compound Air Compressor | ||
 | 1,450,032 | Mar. 27, 1923 | J.W. Gardner | Compressor mechanism | |
| 1,764,753 | Jun. 17, 1930 | J. Seagreen | Fluid-Compressing Means | ||