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US Patent: 1,821,194
Automatic screw driver
Patentee:
George R. Wilcox - Greenfield, MA

USPTO Classifications:
74/127

Tool Categories:
screwdrivers : screwdriver mechanisms : spiral screwdrivers

Assignees:
Millers Falls Co. - Millers Falls, MA

Manufacturer:
Millers Falls Co. - Millers Falls, MA

Witnesses:
Unknown

Patent Dates:
Applied: Dec. 01, 1930
Granted: Sep. 01, 1931

Patent Pictures:
USPTO pdf tiff
Google Patents
Report data errors or omissions
Randy Roeder's Millers Falls Co. site
"Vintage Machinery" entry for Millers Falls Co.

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