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US Patent: 558,528
Lubricator
Patentee: John M. Shartle (exact or similar names) - Middletown, OH USPTO Classifications: 184/43, 384/385 Tool Categories: industrial tools : lubricators Assignees: None Manufacturer: Middletown Machine Co. - Middletown, OH Witnesses: W. G. Clark B. Harwitz	Patent Dates: Applied: Oct. 24, 1893 Granted: Apr. 21, 1896 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Middletown Machine Co.
Description: The Shartle name is associated with the Middletown Machine Co. and so the presumption is that this lubricator design was used by that firm.

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