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| All Patents in class 29/DIG.43 | |||||
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| Number | Date | Patentee | Title | Type | |
| 333,410 | Dec. 29, 1885 | M.E. Hawkins | Device for Upsetting the Ends of Metal Pipes | pipe and tube expanders | |
| 501,547 | Jul. 18, 1893 | E. Thomson | Shaping and Spinning Metals by Electricity | electrical discharge machining | |
| 633,280 | Sep. 19, 1899 | J.R. Blakeslee | Die and Tool for Upsetting Tubes | forging dies | |