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Patent number:
Patent Date:
US Patent: 1,621,738
Retard device
Patentees:
Joseph W. Motherwell (
exact
or
similar
names) - Melrose, Middlesex County, MA
Harry S. Baker (
exact
or
similar
names) - Arlington, Middlesex County, MA
USPTO Classifications:
137/382
,
137/385
,
137/553
,
137/614.17
,
84/271
Tool Categories:
hardware
:
valves
Assignees:
Ashton Valve Co.
- Boston, Middlesex County, MA
Manufacturer:
Ashton Valve Co.
- Boston, Middlesex County, MA
Witnesses:
Unknown
Patent Dates:
Applied:
Aug. 18, 1925
Granted:
Mar. 22, 1927
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Ashton Valve Co.
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