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Patents for Robert H. Kammler | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 934,692 | Sep. 21, 1909 | H.S. Plant | Micrometer Gage | |
![]() | 956,280 | Apr. 26, 1910 | G. Bryar | One-Piece Pipe Wrench | |
![]() | 1,072,493 | Sep. 09, 1913 | H.S. Plant | Micrometer Gage |