Image Lot Price Description

1369
$0.00

PATENT MODEL: IMPROVEMENT IN ELECTRO-MAGNETIC MOTORS. John Doyle, inventor. Patent #217,731; dated July 22, 1879. Cast iron and framework supporting brass and wood revolving block motor with electro-magnets at a closer distance than prior examples hence increasing the efficiency and power of the motor. Retains original patent tag and contemporary copies of original patent papers. SIZE: 12-1/2″ w x 10-1/4″ h. PROVENANCE: Alan Rothschild Patent Model Collection. CONDITION: Near excellent restored condition. 1-9165 (2,750-3,750)


Auction: Advertising, Toy & Doll - Spring 2009
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