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Patent number:
Patent Date:
US Patent: 433,246
Valve for Gas Engines
Patentee:
Samuel Lawson (
exact
or
similar
names) - New York, NY
USPTO Classifications:
123/144
,
123/81B
Tool Categories:
propulsion and energy
:
internal combustion engines
:
internal combustion engine valves
Assignees:
Samuel Lawson
- New York, NY
Alonzo T. Welch
- New York, NY
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Jan. 04, 1890
Granted:
Jul. 29, 1890
Patent Pictures:
USPTO
(New site tip)
Google Patents
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