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Patent number:
Patent Date:
US Patent: 1,835,687
Backing-Off Mechanism for Grinding Machines
Patentee:
Harvey M. Allison (
exact
or
similar
names) - Worcester, Worcester County, MA
USPTO Classifications:
451/222
,
451/374
Tool Categories:
metalworking machines
:
grinders
:
grinding attachments
Assignees:
John Bath
- Worcester, Worcester County, MA
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Mar. 27, 1931
Granted:
Dec. 08, 1931
Patent Pictures:
USPTO
(New site tip)
Google Patents
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