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| Patents for John S. Barnes (deceased, estate of) | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,030,562 | Feb. 11, 1936 | P.R. Guirl, H. Barnes (executrix), J.S. Barnes (deceased, estate of) | Metal Working Apparatus | pipe cutting machines | |
| 2,114,284 | Apr. 19, 1938 | H. Barnes (executrix), E.J. Svenson, P.R. Guirl, J.S. Barnes (deceased, estate of) | Machine Tool and Control Therefor | machine tool controls | |
| RE20,974 | Jan. 10, 1939 | J.S. Barnes (deceased, estate of), P.R. Guirl | Metal Working Apparatus | pipe cutting machines | |