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US Patent: 2,924,239
Servo Valve Having Helically Arranged Metering Parts
Patentee:
Stanley A. Bjorklund (exact or similar names) - Loves Park, Winnebago County, IL

USPTO Classifications:
137/625.69

Tool Categories:
metalworking machines : metalworking machine mechanisms

Assignees:
Rockford Machine Tool Co. - Rockford, Winnebago County, IL

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Aug. 13, 1954
Granted: Feb. 09, 1960

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

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