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| Patents for National Meter Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 271,902 | Feb. 06, 1883 | L.H. Nash | Gas Engine | |
 | 278,168 | May 22, 1883 | L.H. Nash | Combined Gas Engine and Air Compressor | |
 | 278,255 | May 22, 1883 | L.H. Nash | Gas Engine | |
 | 278,256 | May 22, 1883 | L.H. Nash | Gas Engine | |
 | 289,019 | Nov. 27, 1883 | L.H. Nash | Gas Engine | |
 | 289,691 | Dec. 04, 1883 | L.H. Nash | Gas Engine | |
 | 289,692 | Dec. 04, 1883 | L.H. Nash | Gas Engine | |
 | 289,693 | Dec. 04, 1883 | L.H. Nash | Gas Engine | |
 | 312,494 | Feb. 17, 1885 | L.H. Nash | Gas Engine | |
 | 312,496 | Feb. 17, 1885 | L.H. Nash | Gas Engine | |