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| All Patents in class 239/600 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,395,537 | Nov. 01, 1921 | G.L. Walker | Combination Blowpipe | welding tools | |
| 2,586,145 | Feb. 19, 1952 | G.W. Breuer, C.W. Lanter | Draft applying tool for portable motor-blower units | blowers | |