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| All Patents in class 140/71C | |||||
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| Number | Date | Patentee | Title | Type | |
| 372,423 | Nov. 01, 1887 | F. Mallet-Guy | Machine for the Manufacture of Wire Spirals | wire winding machines | |
| 458,115 | Aug. 18, 1891 | E. Thomson | Method of Electric Bending and Straightening | metal bending machines | |