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:
Feb. 07, 1984
Filed:
Jun. 22, 1981
Applicant:
Inventor:
Daniel R von Recklinghausen, Arlington, MA (US);
Assignee:
Electro Audio Dynamics, Inc., Great Neck, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
128746 ; 73585 ; 73149 ;
Abstract
Improvements are described for apparatus used in the measurement of acoustic admittance in ear canals including circuit means for permitting the measurement of relatively small acoustic volumes with an accuracy of better than one percent.