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US Patent: 408,496
Threshold measuring gage
Patentee:
Dean W. Macker - Grafton, MA

USPTO Classifications:
33/194

Tool Categories:

Assignees:
None

Manufacturer:
Unknown

Witnesses:
Chas H. Burleigh
Ella P. Blenus

Patent Dates:
Applied: Apr. 10, 1889
Granted: Aug. 06, 1889

Patent Pictures: [ 1 | 2 | 3 ]
USPTO pdf tiff
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Description:
One of these appeared in a Martin J. Donnelly auction

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