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| Patents for John H. Frey | |||||
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| Number | Date | Patentee | Title | Type | |
| 510,375 | Dec. 05, 1893 | J. Ayuso | Winding Key For Guitars | socket wrenches | |
| 1,256,462 | Feb. 12, 1918 | M. Mayer, J.H. Frey | Boring Tool Holder | drilling and boring tool holders | |
| 1,463,686 | Jul. 31, 1923 | J.N. Kaiser, J.H. Frey | Boring Head | boring heads | |