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US Patent: 900,531
Lens measuring instrument
Patentee:
Franklin Hardinge (exact or similar names) - Chicago, IL

USPTO Classifications:
33/507

Tool Categories:

Assignees:
Geneva Optical Co. - Chicago, IL

Manufacturer:
Not known to have been produced

Witnesses:
Charles J. Schmidt
George E. Higham

Patent Dates:
Applied: Nov. 17, 1906
Granted: Oct. 06, 1908

Patent Pictures:
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Vintage Machinery entry for Hardinge Brothers

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