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CA Patent: CA-24,874
Combined drill and bit shank and holder
Patentee:
Simon Peter Graham (exact or similar names) - Galt, ON Canada

USPTO Classifications:

Tool Categories:
metalworking machines : drilling and boring : drill bits : metalworking twist drills
woodworking machines : wood drilling and boring : drill presses : drill press chucks
metalworking machines : drilling and boring : drill presses : drill press chucks

Assignees:
None

Manufacturer:
Graham Twist Drill Co. - Detroit, MI

Witnesses:
Earl Hayden
A. Edmunds
P. J. Edmunds

Patent Dates:
Applied: Jul. 06, 1885
Granted: Sep. 03, 1886

Patent Pictures:
CIPO Data
Report data errors or omissions to steward Jeff Joslin
Description:
This is the Canada equivalent of US patent 339,544; see that entry for more information on this invention.

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