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| Patents for The Detroit Sheet Metal and Brass Works | |||||
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| Picture | Number | Date | Patentee | Title | |
| 611,759 | Oct. 04, 1898 | E. McCoy | Lubricator | ||
| 614,307 | Nov. 15, 1898 | E. McCoy | Oil Cup | ||
| 627,623 | Jun. 27, 1899 | E. McCoy | Lubricator | ||