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US Patent: 1,589,156
Linoleum Cutter
John C. Hartman - Lancaster, PA

USPTO Classifications:
30/293, 30/294, 30/312, 30/317, 30/320

Tool Categories:

Armstrong Cork Company - Lancaster, PA

Armstrong Cork Company - Lancaster, PA


Patent Dates:
Applied: Aug. 15, 1922
Granted: Jun. 15, 1926

Patent Pictures: [ 1 | 2 | 3 | 4 | 5 ]
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Plane style holder for a linoleum knife for creating tight seams. Production model closely follows the patent drawing.

The example I own has a invalid patent date of 17 Dec 1925 cast in the body. This marking helped to test a theory about invalid patent dates and if manufactures utilized the application date when beginning the production run. In this one example the marked date does not correspond to the application date of 15 AUG 1922.

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