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| All Patents in class 15/28 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,093,820 | Apr. 21, 1914 | C.H. Beach | Vacuum-cleaner | vacuum cleaners | |
| 2,170,036 | Aug. 22, 1939 | R. Schumann | Small electric machine tool | handheld power tools | |