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| All Patents in class 30/170 | |||||
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| Number | Date | Patentee | Title | Type | |
| 553,879 | Feb. 04, 1896 | J.A. Traut | Scraper with Roller Guide | scrapers | |
| 763,605 | Jun. 28, 1904 | D. Hepp | Tool-holder | ||
| 904,709 | Nov. 24, 1908 | J. Miotke | Floor Scraper | scraping machines | |
| 927,742 | Jul. 13, 1909 | J. Miotke | Attachment for Floor Scrapers | scraping machines | |