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:
Aug. 08, 1978
Filed:
Feb. 23, 1977
Applicant:
Inventor:
Nels Nelsson, Des Plaines, IL (US);
Assignee:
United States Gypsum Company, Chicago, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
B26D / ;
U.S. Cl.
CPC ...
83-5 ; 144 82 ; 1441 / ;
Abstract
Disclosed is a gypsum wallboard panel having kerfing in opposing edges thereof which extends substantially the length of the edges but terminates prior to the corners of the panel a distance sufficient to prevent weakening of the corners of the panels.