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US Patent: 503,045
Marker for Window-Frames
Patentee:
William Grennan (exact or similar names) - Bristol, CT

USPTO Classifications:
33/197, 33/666

Tool Categories:
layout tools : special purpose gauges

Assignees:
None

Manufacturer:
Unknown

Witnesses:
Michael Mulligan
Dennis Reilly
Edward W. Bush
M. W. Kohle

Patent Dates:
Applied: Nov. 29, 1892
Granted: Aug. 08, 1893

Patent Pictures: [ 1 | 2 ]
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Report data errors or omissions to steward Ralph Brendler
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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