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Patent number:
Patent Date:
US Patent: 1,474,679
Hand drill provided with a speed-changing device
Patentee:
Victor Gustave Lutz (
exact
or
similar
names) - Paris, France
USPTO Classifications:
81/34
Tool Categories:
woodworking tools
:
hand drills
Assignees:
None
Manufacturer:
Unknown
Witnesses:
C. Coutal
Maurice Roux
Patent Dates:
Applied:
Aug. 29, 1921
Granted:
Nov. 20, 1923
Patent Pictures: [
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