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. 08, 1977
Filed:
Dec. 03, 1975
Applicant:
Inventor:
Gordon A Erickson, St. Paul, MN (US);
Assignee:
Conwed Corporation, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E04B / ;
U.S. Cl.
CPC ...
181286 ; 52239 ; 160351 ; 181287 ; 181290 ; 181295 ;
Abstract
A lightweight sound absorbing panel is disclosed. The panel comprises front and rear faces mounted to a supporting frame and having a core therebetween. The core is at least partially free airspace throughout a substantial portion of the area of the panel whereby weight reduction and increased sound absorption are obtained.