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US Patent: 2,157,758
Change Speed Transmission
Patentee:
Richard S. Jacobsen (exact or similar names) - Wheaton, IL

USPTO Classifications:
474/27

Tool Categories:

Assignees:
None

Manufacturer:
Unknown

Witnesses:
Unknown
Patent Dates:
Applied: May 20, 1937
Granted: May 09, 1939

Patent Pictures: [ 1 | 2 | 3 | 4 ]
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Description:
JFS Jr. Vari-Speed Control. Sample marked Pat. Pend.

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