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| Patents for Charles G. Cole | |||||
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| Number | Date | Patentee | Title | Type | |
| 341,080 | May 04, 1886 | E. Weissenborn | Calipers or Dividers | calipers | |
| 341,081 | May 04, 1886 | E. Weissenborn | Compass Attachment for Pencils | compasses | |