Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 2,189,422
Combined drilling and tapping machine
Patentee:
George W. Irwin - Holland, OH

USPTO Classifications:
408/9, 470/181

Tool Categories:
metalworking machines : drilling and boring : drill presses
woodworking machines : wood drilling and boring : drill presses
metalworking machines : drilling and boring : tapping machines

Assignees:
Toledo General Manufacturing Co. - Toledo, OH

Manufacturer:
Toledo General Manufacturing Co. - Toledo, OH

Witnesses:
Unknown

Patent Dates:
Applied: Aug. 29, 1938
Granted: Feb. 06, 1940

Patent Pictures:
USPTO pdf tiff
Google Patents
Report data errors or omissions
"Vintage Machinery" entry for Demco Machine Tool Co.
Description:
The assignee acquired drilling machine maker Demco Machine Tool Co. in the early 1930s; the drilling machine in the patent was sold under the "Demco" brand.

Copyright © 2002-2019 - DATAMP