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US Patent: 3,878,706
Knockout arrangement for presses
Patentees: Harry E. Keithley (exact or similar names) - Battle Creek, MI Gordon C. Berry (exact or similar names) - Freeport, MI USPTO Classifications: 72/345 Tool Categories: metalworking machines : metalworking presses Assignees: Gulf & Western Mfg. Co. (Hastings) - Southfield, MI Manufacturer: E. W. Bliss Co. - Brooklyn, NY Witnesses: Unknown	Patent Dates: Applied: Feb. 25, 1974 Granted: Apr. 22, 1975 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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