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US Patent: 1,693,109
Semiautomatic Valve
Patentee:
Walter Ernst (exact or similar names) - Mount Gilead, Morrow County, OH

USPTO Classifications:
137/112, 137/495, 137/509, 137/606, 137/627.5, 137/636.1, 91/29, 91/33, 91/446

Tool Categories:
industrial machines : hydraulic machinery : hydraulic valves

Assignees:
Hydraulic Press Mfg. Co. - Mount Gilead, Morrow County, OH

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jul. 26, 1926
Granted: Nov. 27, 1928

Patent Pictures:
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Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Hydraulic Press Mfg. Co.

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