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| Patents for Packard Motor Car Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,283,693 | Nov. 05, 1918 | C.E. Derr | Machine for Cutting Gears | gear making machines | |
| 1,948,698 | Feb. 27, 1934 | J.M. Christman | Tool Holder | drilling and boring tool holders | |
| 2,375,557 | May 08, 1945 | P.J. Hurley | Micrometer Caliper | micrometers | |