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| Patents for John M. Ritter | |||||
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| Number | Date | Patentee | Title | Type | |
| 538,119 | Apr. 23, 1895 | J.B. Olney | Billiard Cue Cutter | ||
| 556,237 | Mar. 10, 1896 | I.F. Allman | Vapor Engine | ||
| 631,249 | Aug. 15, 1899 | W.F. Folmer | Magazine Plate Holder | film and plate holders | |
| 760,245 | May 17, 1904 | H. Plante | Combined Butt Gage and Bead Plane | butt gauges | |
| 762,035 | Jun. 07, 1904 | W.F. Folmer | Magazine Film Holder | film and plate holders | |
| 867,081 | Sep. 24, 1907 | J.J. Robinson | Gage | circular saw accessories | |