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US Patent: 1,224,272
Unloader for Air Compressors
Patentee:
William H. Callan - Franklin, Venango County, PA

USPTO Classifications:
137/102, 251/28

Tool Categories:
industrial machines : pneumatic : air compressors

Assignees:
Chicago Pneumatic Tool Co. - Chicago, IL

Manufacturer:
Not known to have been produced

Witnesses:
Wayne W. Blakeley
Lee H. Wright
Marlin H. Olsen
Robert Dobberman

Patent Dates:
Applied: Mar. 08, 1915
Granted: May 01, 1917

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Chicago Pneumatic Tool Co.

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