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| All Patents in class 55/480 | |||||
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| Number | Date | Patentee | Title | Type | |
| 658,569 | Sep. 25, 1900 | J.A. Mosher | Gas Strainer | acetylene gas generators | |
| 2,439,596 | Apr. 13, 1948 | S.A. Crosby | Air filter for polishing machines | handheld power sanders | |