US Patent: 503,045
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| Marker for Window-Frames
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Patentee:
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| William Grennan (exact or similar names) - Bristol, CT |
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Patent Dates:
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| Applied: |
Nov. 29, 1892 |
| Granted: |
Aug. 08, 1893 |
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Patent Pictures:
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1 | 2
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Ralph Brendler
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Description: |
| Another specialized gage for marking the pulley mortise location on a window sash, similar to the Zimmerman patent of 1886 (349,330). The big difference from the earlier patent is that this tool uses spring-loaded, retractable points for marking. |
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