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| Patents for Martin Petry | |||||
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| Number | Date | Patentee | Title | Type | |
| 355,032 | Dec. 28, 1886 | H.A. Schneekloth | Telephone-receiver | ||
| 363,070 | May 17, 1887 | W. Keuffel | Tape Measure Case | tape measures | |
| 379,519 | Mar. 13, 1888 | T.F. Krueger | Pipe Wrench | pipe wrenches | |
| D20,344 | Nov. 18, 1890 | H.A. Schneekloth | Design for a barber's chair | ||