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| Patents for Parker & Whipple Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 493,409 | Mar. 14, 1893 | F.H. Richards | Belt Shifting Apparatus | industrial machine pulleys and belt drive mechanisms | |
| 497,286 | May 09, 1893 | F.H. Richards | Turning Machine | turret lathes | |