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GB Patent: GB-850,425
A hydraulic circuit embodying a combined pump and control unit
Patentees:
Walter Ernst (exact or similar names) - Dayton, OH
Frederick G. Krafft (exact or similar names) - Springfield, OH

USPTO Classifications:

Tool Categories:
metalworking machines : grinding machines
metalworking machines : metalworking machine mechanisms : hydraulic apparatus

Assignees:
Thompson Grinder Co. - Dayton, OH

Manufacturer:
Thompson Grinder Co. - Springfield, OH

Witnesses:
Unknown

Patent Dates:
Applied: Aug. 18, 1958
Granted: Oct. 05, 1960

Patent Pictures:
Espacenet patent
Report data errors or omissions to steward Jeff Joslin
"Vintage Machinery" entry for Thompson Grinder Co.

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