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US Patent: 666,869
End Thrust Counterbalance for Centrifugal Pumps and Shafting
Patentee: Frank H. Jackson (exact or similar names) - San Francisco, San Francisco County, CA USPTO Classifications: 415/106, 415/140 Tool Categories: industrial machines : pumps : rotary pumps Assignees: None Manufacturer: Byron Jackson Co. - San Francisco, San Francisco County, CA Witnesses: John W. Nye Lee D. Craig J. B. Nourse H. F. Ascheck	Patent Dates: Applied: Sep. 07, 1899 Granted: Jan. 29, 1901 Patent Pictures: [ 1 | 2 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Byron Jackson Co.

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