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| All Patents in class 474/182 | |||||
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| Number | Date | Patentee | Title | Type | |
| 757,088 | Apr. 12, 1904 | C.A. Brinley | Sheet-metal pulley | industrial machine pulleys and belt drive mechanisms | |
| 767,377 | Aug. 16, 1904 | R.H. Bowen | Sheave, wheel, or pulley | industrial machine pulleys and belt drive mechanisms | |