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| All Patents in class 415/180 | |||||
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| Number | Date | Patentee | Title | Type | |
| 100,238 | Feb. 22, 1870 | B.F. Sturtevant | Hot Air Blower | blowers | |
| 2,157,191 | May 09, 1939 | J.B. Sinnett | Method of and means for cooling motors | motor cooling | |