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US Patent: 3,566,747
Self-regulating expansion type control valve
Patentee:
Charles W. Frame - Chambersburg, PA

USPTO Classifications:
700/206, 72/19.9, 72/21.5, 72/438

Tool Categories:
metalworking machines : forging machines : drop hammers

Assignees:
Chambersburg Engineering Co. - Chambersburg, PA

Manufacturer:
Chambersburg Engineering Co. - Chambersburg, PA

Witnesses:
Unknown

Patent Dates:
Applied: Feb. 14, 1969
Granted: Mar. 02, 1971

Patent Pictures:
USPTO pdf tiff
Google Patents
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"Vintage Machinery" entry for Chambersburg Engineering Co.

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