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| All Patents in class 322/54 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,501,878 | Jul. 15, 1924 | J. Burke | Generator for arc welding | welding machines | |
| 1,542,261 | Jun. 16, 1925 | J.C. Moore | Electric generator circuit | electric generators | |