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:
Jul. 11, 1978
Filed:
Nov. 17, 1976
Applicant:
Inventor:
Herbert Ernyei, Paris, FR;
Assignee:
Societe Lignes Telegraphiques et Telephoniques, Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H / ; H03H / ; H03H / ; H04R / ;
U.S. Cl.
CPC ...
333 71 ; 310321 ; 310330 ; 333 72 ;
Abstract
In an electromechanical filter comprising longitudinally vibrating resonators intercoupled by means of longitudinally vibrating rods, the transducers each consist of two halves located on two flats machined on the same outermost resonator along two parallel planes.