Patents Assigned to Walker-Grad Inc. - Justia Patents Search

Patents Assigned to Walker-Grad Inc.

Mobile device for the display of advertising or entertainment, or for dispensing products

Patent number: D249423

Type: Grant

Filed: April 27, 1976

Date of Patent: September 19, 1978

Assignee: Walker-Grad Inc.

Inventors: Kenneth H. Walker, Garfield Langworthy, Robert L. Turner