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US Patent: 1,527,757
Automatic chock Automatic chuck
Patentee: James A. Street (exact or similar names) - Pontiac, MI USPTO Classifications: 192/56.57, 279/158, 464/36 Tool Categories: handheld power tools : handheld power tool accessories Assignees: Hugo C. Zietz - Detroit, MI James A. Street - Pontiac, MI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: May 16, 1921 Granted: Feb. 24, 1925 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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