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| All Patents of Type: road scrapers | |||||
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| Number | Date | Patentee | Title | Type | |
| 176,226 | Apr. 18, 1876 | E. Huber | Improvement in revolving scrapers | machine shovels | |
| 637,644 | Nov. 21, 1899 | L.B. McAlpine | Road Machine or Scraper | road scrapers | |