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Patent number:
Patent Date:
US Patent: 1,782,927
Electric power device
Patentee:
James S. Knowlson (
exact
or
similar
names) - Hinsdale, IL
USPTO Classifications:
310/83
,
74/16
Tool Categories:
handheld power tools
:
handheld power rotary tools
Assignees:
Speedway Mfg. Co.
- Chicago, IL
Manufacturer:
Speedway Mfg. Co.
- Chicago, IL
Witnesses:
Unknown
Patent Dates:
Applied:
Oct. 05, 1928
Granted:
Nov. 25, 1930
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Speedway Mfg. Co.
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