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:
Jun. 03, 1980
Filed:
Dec. 23, 1977
Applicant:
Inventors:
Jacques Lewiner, Saint-Cloud, FR;
Gerard Dreyfus, Villebon sur Yvette-Palaiseau, FR;
Jean-Yves Le Traon, Lannion, FR;
Assignees:
Agence Nationale de Valorisation de la Recherche and Etat Francais, both of, FR;
Etat Francais, both of, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H / ; G09F / ;
U.S. Cl.
CPC ...
307125 ; 3401 / ; 340764 ; 340783 ; 340752 ; 1791 / ; 307400 ;
Abstract
A control device comprising three mechanical elements, one of which is moe relatively to the two others and one of these elements being an electret, whereas the two others are control electrodes. The mechanical mobile element forms a portion partially cut out of a plate 3. Applications to electrical (particularly telephone exchanges and optical information display) switching.