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| Patents for Harrison A. McKeown | |||||
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| Number | Date | Patentee | Title | Type | |
| CA-105,386 | May 21, 1907 | J.L. Strickland | Rotary engine | rotary steam engines | |
| 910,941 | Jan. 26, 1909 | A.L. Mowry | Machine for slotting nuts | nut or bolt making machines | |
| 939,061 | Nov. 02, 1909 | A.L. Mowry | Machine for manufacturing grooved pins, &c. | ||