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US Patent: 1,858,889
Change speed mechanism
Patentee:
William W. Edwards (exact or similar names) - Los Angeles, CA

USPTO Classifications:
74/357

Tool Categories:
metalworking machines : drilling and boring : drill presses
metalworking machines : metalworking machine mechanisms : metalworking power transmission
woodworking machines : wood drilling and boring : drill presses

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jun. 01, 1931
Granted: May 17, 1932

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for W. W. Edwards

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