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Patent number:
Patent Date:
US Patent: 757,494
Expansion Boring Tool
Patentee:
William Pohlman (
exact
or
similar
names) - Middletown, Orange County, NY
USPTO Classifications:
408/116
,
408/158
Tool Categories:
metalworking machines
:
drilling and boring
:
boring heads
Assignees:
None
Manufacturer:
Wellman Co.
- Medford, Middlesex County, MA
Witnesses:
Willis H. Davis
Irving G. Downs
P. H. Minshull
Walter Tunnell
Patent Dates:
Applied:
Feb. 19, 1903
Granted:
Apr. 19, 1904
Patent Pictures: [
1
|
2
]
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