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| Patents for Gardner Governor Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 182,816 | Oct. 03, 1876 | R.W. Gardner | Governors for Steam Engines | |
 | 287,822 | Nov. 06, 1883 | R.W. Gardner | Governor | |
 | 300,705 | Jun. 17, 1884 | J.W. Gardner, R.W. Gardner | Governor | |
 | 1,450,032 | Mar. 27, 1923 | J.W. Gardner | Compressor mechanism | |
 | 1,582,976 | May 04, 1926 | J.W. Gardner | Valve Mechanism | |