Elevator Signal Or Call Unit Patents and Patent Applications (Class D10/108) - Justia Patents Search

Elevator Signal Or Call Unit Patents (Class D10/108)

Elevator floor registration button

Patent number: D253940

Type: Grant

Filed: April 27, 1977

Date of Patent: January 15, 1980

Assignee: Westinghouse Electric Corp.

Inventor: Denis E. Bedel
Up and down directional signal for an elevator

Patent number: D254484

Type: Grant

Filed: April 10, 1978

Date of Patent: March 18, 1980

Assignee: Kone Osakeyhtio

Inventor: Pekka Perjo

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