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| Patents for Charles H. Allen | |||||
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| Number | Date | Patentee | Title | Type | |
| 365,363 | Jun. 28, 1887 | J. Cameron, C.H. Allen | Saw-tooth | saw teeth | |
| 552,977 | Jan. 14, 1896 | C.H. Allen, J.H. Allen | Rim Wrench or Tire Bolter | tire bolt wrenches | |
| 1,115,763 | Nov. 03, 1914 | C.H. Allen | Combination Adjustable Alligator Wrench and Tire Tool | alligator wrenches | |
| 2,210,561 | Aug. 06, 1940 | R.C. Allen, C.H. Allen | Outer Taper Gauge | measurement gauges | |