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| All Patents in class 15/389 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,624,969 | Apr. 19, 1927 | F.J. Osius | Vacuum cleaner | vacuum cleaners | |
| 2,859,461 | Nov. 11, 1958 | F.J. Machovec | Sweeper drive and adjustment construction | ||