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Patent number:
Patent Date:
XC Patent: XC-1,291
An improved mode of operating variable expansion steam cut-off valves
Patentee:
Alexander S. Walbridge (
exact
or
similar
names) - Bedford, QC Canada
USPTO Classifications:
Tool Categories:
propulsion and energy
:
steam engines
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Granted:
Nov. 28, 1861
Patent Pictures:
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for A. S. Walbridge
Description:
XC patents are Canadian patents issued between 1824 and 1869.
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