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US Patent: 1,581,927
Electric drill Two-speed gearing for electric drill
Patentee: George L. Kollock (exact or similar names) - Seattle, WA USPTO Classifications: 310/50, 310/83, 470/96, 74/342, 74/343, 74/344, 74/528 Tool Categories: handheld power tools : handheld power drills Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jul. 11, 1923 Granted: Apr. 20, 1926 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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