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| Patents for Lee D. Craig | |||||
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| Number | Date | Patentee | Title | Type | |
| 556,466 | Mar. 17, 1896 | F.A. Huntington | Crushing-mill | ore processing apparatus | |
| 617,082 | Jan. 03, 1899 | J.H. Culver | Calipers | calipers | |
| 666,869 | Jan. 29, 1901 | F.H. Jackson | End Thrust Counterbalance for Centrifugal Pumps and Shafting | rotary pumps | |
| 1,088,544 | Feb. 24, 1914 | L.D. Craig | Combined Folding Rule and Square | folding rules | |