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CA Patent: CA-11,789
Improvements on Safety Valves
Perfectionnements aux Soupapes de Sûreté
Patentee:
Henry George Ashton (exact or similar names) - Somerville, Middlesex County, MA

USPTO Classifications:

Tool Categories:
propulsion and energy : steam apparatus : steam safety valves

Assignees:
None

Manufacturer:
Ashton Valve Co. - Boston, Middlesex County, MA

Witnesses:
John R. Snow
W. Guttet
George O. Joule

Patent Dates:
Applied: Sep. 07, 1880
Granted: Sep. 20, 1880

Patent Pictures: [ 1 | 2 | 3 ]
CIPO Data
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Ashton Valve Co.
Description:
This is the Canadian equivalent of US patents 291,126 and 301,079.

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