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US Patent: 1,975,250
Hydraulic Feed Control Apparatus
Patentees:
Arthur J. Calpha (exact or similar names) - Brazil, IN
Oscar L. Craft (exact or similar names) - Brazil, IN

USPTO Classifications:
137/625.38, 408/11, 408/42, 408/46, 91/189R

Tool Categories:
metalworking machines

Assignees:
Indiana Foundry, Machine & Supply Co. - Brazil, IN

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Aug. 30, 1930
Granted: Oct. 02, 1934

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Indiana Foundry, Machine and Supply Co.

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