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US Patent: 1,131,789
Valve-grinding tool
Patentee:
Walter Henry Pearce (exact or similar names) - Summit, NJ

USPTO Classifications:
451/117, 74/127

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Oct. 03, 1913
Granted: Mar. 16, 1915

Patent Pictures:
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