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Patent number:
Patent Date:
US Patent: 1,722,506
Drop hammer
Patentee:
Henning G. Sahlin (
exact
or
similar
names) - Boston, MA
USPTO Classifications:
192/131R
,
91/27
,
91/31
,
91/410
,
91/448
Tool Categories:
metalworking machines
:
forging machines
:
drop hammers
Assignees:
Pneumatic Drop Hammer Co.
- Boston, MA
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Aug. 13, 1924
Granted:
Jul. 30, 1929
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Pneumatic Drop Hammer Co.
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