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:
Jan. 06, 1976
Filed:
Jul. 15, 1974
Applicant:
Inventors:
Elmer V Carlson, Prospect Heights, IL (US);
August F Mostardo, Jr, Norridge, IL (US);
Assignee:
Industrial Research Products, Inc., Elk Grove Village, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R / ; G10K / ; H04R / ;
U.S. Cl.
CPC ...
181160 ; 179180 ; 181146 ; 181158 ; 181196 ;
Abstract
A damping element comprising fiberous fuseable material shaped to form a cup-like member which may be inserted in the sound openings of an acoustic transducer to provide a selected acoustic resistance.
Quick Actions:
Carlson, Elmer. (1976). Damping element (U.S. Patent No. 3930560). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3930560
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