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| All Patents of Type: boilermaker | |||||
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| Number | Date | Patentee | Title | Type | |
| 238,535 | Mar. 08, 1881 | M.W. Shapley | Machine for flanging circular plates | boilermaker | |
| 438,230 | Oct. 14, 1890 | J.G. Erd | Flue Hole Cutter | boilermaker | |
| 439,496 | Oct. 28, 1890 | B.B. Farris | Boiler Flue Beader | boilermaker | |
| 941,568 | Nov. 30, 1909 | F. Fleming | Combined Drill and Stay Bolt Cutter | boiler repair tools | |