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US Patent: 874,197
Micrometer Calipers
Patentee:
Ernest Heym - Philadelphia, PA

USPTO Classifications:
33/827

Tool Categories:
metalworking tools : machinist tools : measuring tools : inside micrometers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Will. M. Seitzinger
August Pioch
D. Webster, Jr.
P. F. Nagle

Patent Dates:
Applied: Nov. 22, 1906
Granted: Dec. 17, 1907

Patent Pictures:
USPTO pdf tiff
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Description:
Nedershein & Fairbanks.- patent attorneys

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