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Patent number:
Patent Date:
CA Patent: CA-218,476
Electrically operated tool
Patentee:
James Somerville Knowlson (
exact
or
similar
names) - Oak Park, IL
USPTO Classifications:
Tool Categories:
handheld power tools
:
handheld impact tools
:
impact riveters
handheld power tools
:
handheld impact tools
:
impact chisels and drills
Assignees:
Electro-Magnetic Tool Co.
- Chicago, IL
Manufacturer:
Electro-Magnetic Tool Co.
- Cicero, IL
Witnesses:
Unknown
Patent Dates:
Granted:
May 09, 1922
Patent Pictures:
CIPO Data
Report data errors or omissions to steward Jeff Joslin
"Vintage Machinery" entry for Electro-Magnetic Tool Co.
Description:
This is the Canadian equivalent of US patent
1,298,966
.
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