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Patents for Gates Iron Works | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 201,646 | Mar. 26, 1878 | C.M. Brown | Improvement in ore crushers and grinders | |
![]() | 525,443 | Sep. 04, 1894 | P.W. Gates, E.E. Hanna, C.L. Carman | Gyrating crusher | |
![]() | 606,543 | Jun. 28, 1898 | E.E. Hanna | Self-lubricating engine |