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US Patent: 821,984
Clutch and counter-shaft mechanism
Patentees:
Bernhard T. Burchardi (exact or similar names) - Brooklyn, NY
Verner J. Wahlstrom (exact or similar names) - Brooklyn, NY

USPTO Classifications:
192/37

Tool Categories:
industrial machines : industrial machine mechanisms : industrial machine pulleys and belt drive mechanisms : friction clutches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. D. H. Bergen
De Hart Bergen

Patent Dates:
Applied: Dec. 10, 1904
Granted: May 29, 1906

Patent Pictures:
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Vintage Machinery entry for Wahlstrom Tool Co.

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