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Patent number:
Patent Date:
US Patent: 2,815,040
Pressure relief valve
Patentee:
Ronald V. Smith (
exact
or
similar
names) - Pennsauken, NJ
USPTO Classifications:
137/469
,
137/533.29
,
137/540
,
251/360
Tool Categories:
propulsion and energy
:
steam apparatus
:
steam safety valves
Assignees:
J. E. Lonergan Co.
- Philadelphia, PA
Manufacturer:
J. E. Lonergan Co.
- Philadelphia, PA
Witnesses:
Unknown
Patent Dates:
Applied:
Jan. 13, 1954
Granted:
Dec. 03, 1957
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for J. E. Lonergan Co.
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