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| Patents for John W. Kalbfus | |||||
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| Number | Date | Patentee | Title | Type | |
| 604,265 | May 17, 1898 | J. Powell | Lubricator | oil pumps | |
| 712,127 | Oct. 28, 1902 | A. Giesler | Digester for rendering meats and fish | ||
| 712,128 | Oct. 28, 1902 | A. Giesler | Drier for rendering animal and fish meats and refuse | ||
| 754,740 | Mar. 15, 1904 | O.C. Wovries, E. Bordewisch | Adjustable Wrench | quick adjust wrenches | |