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Patents for Wallace A. Downs | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 298,029 | May 06, 1884 | N. Sawyer | Tap Wrench | |
![]() | 300,901 | Jun. 24, 1884 | N. Sawyer | Die Stock and Die | |
736,939 | Aug. 25, 1903 | H.W. Cole | Grinding apparatus |