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:
Apr. 26, 1977
Filed:
Feb. 27, 1976
Applicant:
Inventors:
Heinz Kleinert, Lubbecke, DT;
Karl-Heinz Schudy, Espelkamp, DT;
Assignee:
Robert Krause KG, Hindenburgring, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B42F / ;
U.S. Cl.
CPC ...
402 75 ; 281 29 ; 402 / ;
Abstract
A ring binder has a ring mechanism on the inside of the binder spine and two boards covering the inside surfaces of the binder covers which are hinged to the spine, the boards forming extensions which extend the covers inwardly close to the rings when the binder is open to provide flat writing supports, and the binder has straps interconnecting the covers and supporting the extensions which extend the covers inwardly.