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| All Patents in class 15/104.19 | |||||
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| Number | Date | Patentee | Title | Type | |
| 331,093 | Nov. 24, 1885 | A.B. Smith | Boiler Tube Scraper | boiler repair tools | |
| 560,084 | May 12, 1896 | M.G. Cook | Flue Cleaner | boiler repair tools | |