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Patent number:
Patent Date:
US Patent: 421,517
Drilling Machine
Patentee:
Francis H. Richards (
exact
or
similar
names) - Hartford, CT
USPTO Classifications:
192/21
,
408/133
,
408/236
,
408/47
,
409/900.2
,
74/665R
,
74/841
Tool Categories:
metalworking machines
:
drilling and boring
:
drill presses
Assignees:
Eckley R. Coxe
- Drifton, PA
Manufacturer:
Not known to have been produced
Witnesses:
Henry L. Reckard
Lewis C. Heermann
W. M. Byorknau
Patent Dates:
Applied:
Nov. 23, 1889
Granted:
Feb. 18, 1890
Patent Pictures:
USPTO
(New site tip)
Google Patents
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