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| Patents for James Lockhart | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,671,534 | May 29, 1928 | J. Lockhart | Conveyer | ||
| 1,695,115 | Dec. 11, 1928 | J. Lockhart | Conveyer | ||
| 1,860,679 | May 31, 1932 | R.C. Moore, J. Lockhart | Conveyer | ||