The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 29, 1983
Filed:
Nov. 24, 1981
Naoki Miyagishima, Yokohama, JP;
Shigeru Nakagawa, Fujisawa, JP;
Marui Industry Co., Ltd., , JP;
Abstract
This invention discloses an information display device including a front plate and information visualizing means provided behind the front plate and adapted to make information consisting of characters, patters and/or others appear on the front surface of the plate by the light emitted from the visualizing means and passing through the plate, the device being characterized in that the front plate is made from transparent material such as transparent synthetic resins, glass or the like and is provided with metal coating on the front surface or the back surface of the front plate. The thickness of the metal coating is such that the metal coating permits the light emitted from the visualizing means to pass through it to make the information emerge on the front surface of the front plate and substantially prevents light the intensity of which is less than the former light from passing through the coating.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile