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| Patents for Hugo M. Zschau | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,154,651 | Apr. 18, 1939 | H.M. Zschau, O.P. Wodack | Tool retainer for portable power driven tools | drill chucks | |
| 2,201,420 | May 21, 1940 | H.M. Zschau | Disc sander for floors | handheld power sanders | |