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| Patents for J. H. Crawford | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,257,826 | Feb. 26, 1918 | S.R. Emerson | Saw Gage | saw gauges | |
| 1,275,855 | Aug. 13, 1918 | J.L. Copping | Monkey Wrench | screw adjust wrenches | |
| 1,328,228 | Jan. 13, 1920 | A.O. Feilbach | Tool For Lifting Valve Springs | valve spring tools | |
| 1,411,911 | Apr. 04, 1922 | A. Desbains | Taper Gauge | measurement gauges | |
| 1,416,694 | May 23, 1922 | A.L. De Leeuw | Gauge | measurement gauges | |