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| Patents for Frank G. Echols | |||||
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| Number | Date | Patentee | Title | Type | |
| 588,056 | Aug. 10, 1897 | F.G. Echols | Screw Cutting Tool | ||
| 588,222 | Aug. 17, 1897 | F.G. Echols | Tool Holder | lathe tool holders and tool posts | |
| 602,062 | Apr. 12, 1898 | F.G. Echols | Metal Working Machine | automatic lathes | |
| 610,158 | Aug. 30, 1898 | F.G. Echols | Tool for Cutting Screw Threads | tap and die holders | |
| 627,299 | Jun. 20, 1899 | F.G. Echols | Metal-working machine | milling machines | |
| 631,159 | Aug. 15, 1899 | F.G. Echols | Machine for Cold Rolling | thread rolling machines | |