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US Patent: 3,699,882
Knockout bar assembly for presses
Patentees: Robert A. Helrigel (exact or similar names) - Hastings, MI Harry E. Keithley (exact or similar names) - Battle Creek, MI USPTO Classifications: 100/218, 72/345, 72/427, 83/127, 83/135 Tool Categories: metalworking machines : metalworking presses Assignees: Gulf & Western Industrial Products Co. - Grand Rapids, MI Manufacturer: E. W. Bliss Co. - Brooklyn, NY Witnesses: Unknown	Patent Dates: Applied: Jul. 02, 1971 Granted: Oct. 24, 1972 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for E. W. Bliss Co.

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