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| Patents for L. B. Middleton | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 796,854 | Aug. 08, 1905 | W.H. Nicholson | Shaft Coupling | |
 | 857,810 | Jun. 25, 1907 | G. Kohlhaas | Hole Micrometer | |
| 1,265,277 | May 07, 1918 | W.H. Strickland | Saw Set | ||
 | 1,266,249 | May 14, 1918 | W.E. Ginsberg | Tool Holder | |
 | 1,276,274 | Aug. 20, 1918 | J. Shaffer | Adjustable Pipe Wrench | |