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US Patent: 820,549
Means for Cooling Engine and Other Cylinders
Patentee:
Edward P. Caldwell - Chicago, IL

USPTO Classifications:
123/41.3, 165/183

Tool Categories:
propulsion and energy : internal combustion engines : heat radiators

Assignees:
Charles W. Caldwell - Waterloo, Black Hawk County, IA

Manufacturer:
Caldwell-Hollowell Mfg. Co. - Waterloo, Black Hawk County, IA

Witnesses:
Albert H. Adams
Minnie A. Hunter
G. V. Donasu
J. B. Weir

Patent Dates:
Applied: Dec. 22, 1904
Granted: May 15, 1906

Patent Pictures:
USPTO pdf tiff
Google Patents
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"Vintage Machinery" entry for Caldwell-Hollowell Mfg. Co.

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