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| Patents for Charles A. Green | |||||
| Picture | Number | Date | Patentee | Title | |
![]() | 1,411,491 | Apr. 04, 1922 | H.F. Schuh, C.A. Green | Replacable Tips for Compasses | |
![]() | 1,417,375 | May 23, 1922 | H.F. Schuh, C.A. Green | Adjustable Draftsman's Compass | |