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All Patents in class 318/376 | |||||
Number | Date | Patentee | Title | Type | |
273,208 | Feb. 27, 1883 | S.S. Wheeler | Electric Elevatror | elevators and lifts | |
318,668 | May 26, 1885 | F.J. Sprague | Method of Operating Electric Railway Trains | electric railroads | |
324,621 | Aug. 18, 1885 | S.S. Wheeler | Electric Elevator | elevators and lifts |