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US Patent: 1,424,625
Rotary Glass Cutter
Patentee:
Carl F. Doerr - Yonkers, NY

USPTO Classifications:
33/27.03

Tool Categories:
knives and cutters : glass cutters
layout tools : compasses

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Edw. Thorpe
Hugh H. Alt

Patent Dates:
Applied: Jan. 14, 1922
Granted: Aug. 01, 1922

Patent Pictures:
USPTO pdf tiff
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Description:
This is an improvement to his earlier patent (1,421,921 - 7/4/1922) that features a better adjuster for the head.

Note that this design is very similar to the much earlier Rowland patent (#396,600), which was also produced in the same area. It is not known if these two patented tools are related.

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