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US Patent: 1,621,495
Rotary Pump
Patentee:
Conrad M. Conradson - Green Bay, Brown County, WI

USPTO Classifications:
417/270, 417/291, 417/302, 417/309, 91/485, 91/497

Tool Categories:
industrial machines : pumps : rotary pumps

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Mar. 26, 1926
Granted: Mar. 22, 1927

Patent Pictures:
USPTO pdf tiff
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