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Patent US215917 - IMPROVEMENT IN ATTACHING ELECTRICAL SWITCH-WIRES TO BINDING-POSTS
IMPROVEMENT IN ATTACHING ELECTRICAL SWITCH-WIRES TO BINDING-POSTS
JAMES E. HAMILTON
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Abstract
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Patent number
: 215917
Filing date
: Mar 5, 1879
Issue date
: May 27, 1879
Inventor
:
JAMES E. HAMILTON
Current U.S. Classification
:
439/805
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