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:
May. 08, 1984
Filed:
Jul. 23, 1981
Applicant:
Inventor:
Werner Fidi, Baden, AT;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R / ; H04R / ;
U.S. Cl.
CPC ...
1791 / ; 1791 / ; 1791 / ; 179116 ; 181153 ; 181158 ; 181190 ;
Abstract
An electroacoustic two-way transducer assembly particularly for headphones and microphones comprises an electrostatic treble system having an electrostatic treble system disphragm and an electrodynamic system disposed under said electrostatic treble system. The electrodynamic system has an attachment portion with a flat front side forming a disc-shaped back plate for the electrostatic treble system diaphragm.