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| Patents for Charles A. Green | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,411,491 | Apr. 04, 1922 | C.A. Green, H.F. Schuh | Replacable Tips for Compasses | compasses | |
| 1,417,375 | May 23, 1922 | H.F. Schuh, C.A. Green | Adjustable Draftsman's Compass | dividers | |