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| Patents for Ida Heitz | |||||
| Picture | Number | Date | Patentee | Title | |
![]() | 534,006 | Feb. 12, 1895 | J. Powell | Lubricator | |
![]() | 604,265 | May 17, 1898 | J. Powell | Lubricator | |
![]() | 614,967 | Nov. 29, 1898 | J. Mills | Crank Planer and Metal Shaper | |