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US Patent: 1,675,136
Machine for Cutting Oil Grooves
Patentee: Elmer P. Sacrey (exact or similar names) - Philadelphia, PA USPTO Classifications: 409/305, 409/307, 409/326, 82/902 Tool Categories: metalworking machines : oil grooving machines Assignees: None Manufacturer: Philadelphia Engineering & Machine Co. - Philadelphia, PA Witnesses: none listed	Patent Dates: Applied: May 01, 1924 Granted: Jun. 26, 1928 Patent Pictures: [ 1 | 2 | 3 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Philadelphia Engineering & Machine Co.
Description: The early (1920-1920) models of this machine say "Patent Pending" on the label.

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