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| Patents for L. E. Barkley | |||||
| Number | Date | Patentee | Title | Type | |
| 923,538 | Jun. 01, 1909 | B. Langlotz | Tire-Bolt Wrench | tire bolt wrenches | |
| 1,002,149 | Aug. 29, 1911 | H. Hauser | Vernier Calipers | calipers | |