U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

"What can be more palpably absurd than the prospect held out of locomotives traveling twice as fast as stagecoaches?"

The Quarterly Review ; March edition, 1825

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Class 191/79 - Rope-retracted

Subclass of Class 191 - Electricity: transmission to vehicles
Definition: Trolley guards and finders of the normally operative type
No. of patents: 0