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US Patent: 1,708,158
Valve structure for compressors
Patentee:
Edwin H. Stedman - St. Louis, MO

USPTO Classifications:
137/454.4, 137/454.5, 137/512, 137/512.3, 137/516.21, 417/564, 417/567

Tool Categories:
industrial machines : pneumatic : air compressors

Assignees:
Curtis Manufacturing Co. - Wellston, MO

Manufacturer:
Curtis Manufacturing Co. - Wellston, MO

Witnesses:
Unknown

Patent Dates:
Applied: Feb. 06, 1928
Granted: Apr. 09, 1929

Patent Pictures:
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