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| Patents for Peter Geiser | |||||
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| Number | Date | Patentee | Title | Type | |
| 9,341 | Oct. 19, 1852 | P. Geiser | Grain-separator | corn and grain separators | |
| 13,644 | Oct. 09, 1855 | P. Geiser | Grain-separator | corn and grain separators | |
| RE2,484 | Feb. 19, 1867 | P. Geiser | Improvement in grain separators | corn and grain separators | |
| 82,617 | Sep. 29, 1868 | P. Geiser | Improvement in horse-power | animal powered apparatus | |
| 106,930 | Aug. 30, 1870 | P. Geiser, L.P. Thompson | Improvement in machine for tonguing and grooving | matchers | |