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US Patent: 2,436,492
Pumping Units for Mechanical Lubricators
Patentee: Ralph H. Shepard (exact or similar names) - New York, NY USPTO Classifications: 184/33, 417/500, 74/22R, 91/186, 92/13.7 Tool Categories: industrial machines : industrial machine mechanisms : industrial machine lubrication Assignees: Nathan Mfg. Co. - New York, NY Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 06, 1946 Granted: Feb. 24, 1948 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Nathan Mfg. Co.

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