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:
Dec. 01, 1987
Filed:
Jan. 21, 1986
Applicant:
Inventors:
Dieter Lewandowski, Wilhelmshaven, DE;
Rolf Ostermoor, Wilhelmshaven, DE;
Dieter Spranger, Schortens, DE;
Assignee:
Olympia Aktiengesellschaft, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ;
U.S. Cl.
CPC ...
264 25 ; 2191 / ; 2191 / ; 2191 / ; 264 402 ; 264 407 ; 264132 ; 4251744 ; 4251 / ;
Abstract
A process for inscription of parts from plastic material whose color can be changed through the effect of an energy radiation used for providing alphanumeric characters or other symbols on the key buttons of a keyboard. The office machine keyboard completely equipped with blank key buttons is for that purpose moved relative to the energy radiation, for instance a laser beam, with the coordinated character or symbol being inscribed on each key button by the energy radiation in accordance with stored data as the key button proceeds into the effective area of the energy radiation.