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US Patent: 3,021,723
Spindle locking means for portable tools
Patentee: Reynold Happe (exact or similar names) - Princeton, NJ USPTO Classifications: 188/69, 279/150, 408/124, 408/710, 74/411.5, 74/527 Tool Categories: handheld power tools : handheld power drills Assignees: Diehl Mfg. Co. - Somerville, NJ Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Sep. 10, 1958 Granted: Feb. 20, 1962 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Diehl Mfg. Co.

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