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Patent number:
Patent Date:
US Patent: 1,256,222
Drill Socket
Patentee:
John F. Graybill (
exact
or
similar
names) - Flora, IL
USPTO Classifications:
279/103
,
279/14
Tool Categories:
metalworking machines
:
drilling and boring
:
drill presses
:
drill press chucks
Assignees:
John F. Graybill
- Flora, IL
Earl Arbuthnot
- Flora, IL
Horatio C. Chaffin
- Flora, IL
Manufacturer:
Not known to have been produced
Witnesses:
J. L. Boyles
E. W. Bryan
Patent Dates:
Applied:
Mar. 14, 1917
Granted:
Feb. 12, 1918
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
Description:
Watson E. Coleman - patent attorney
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