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Patent number:
Patent Date:
US Patent: 2,335,602
Collapsible mandrel
Patentees:
George A. Martin (
exact
or
similar
names) - Salem, OH
Leonard W. Nash (
exact
or
similar
names) - Damascus, OH
USPTO Classifications:
242/573.8
,
242/574.1
Tool Categories:
metalworking machines
:
sheet metal
Assignees:
E. W. Bliss Co.
- Brooklyn, NY
Manufacturer:
E. W. Bliss Co.
- Brooklyn, NY
Witnesses:
Unknown
Patent Dates:
Applied:
Jun. 27, 1938
Granted:
Nov. 30, 1943
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for E. W. Bliss Co.
Description:
See also patent
2,268,125
, which is a sheet metal coiling machine that uses this collapsible mandrel.
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