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| Patents for James W. Calvert | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,318,465 | Mar. 09, 1982 | C.P. Shinkle, J.W. Calvert | Indexing Drive Control | workpiece changers and storage mechanisms | |
| D271,112 | Oct. 25, 1983 | R.D. Smith, S.L. Belcher, J.W. Calvert, J.G. Wiatt | Chuck Body | metal lathe chucks | |