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| All Patents in class 82/79 | |||||
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| Number | Date | Patentee | Title | Type | |
| 235,022 | Nov. 30, 1880 | J.T. Ridgway | Automatic Attachments to Lathes Cutting Rubber and Other Rings | metal lathe accessories and attachments | |
| 648,602 | May 01, 1900 | J.E. Thropp, Jr. | Machine for Cutting Rubber Sealing Rings for Jars, &c. | material cutting machines | |