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:
Sep. 08, 1992
Filed:
Mar. 25, 1991
Applicant:
Inventors:
Samuel Toliver, Rustburg, VA (US);
Gerald E Roberts, Lynchburg, VA (US);
Myron A Turner, Jr, Lynchburg, VA (US);
Assignee:
Ericsson GE Mobile Communications Inc., Lynchburg, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
324727 ; 324652 ; 324649 ;
Abstract
A monolithic coupled-dual resonator crystal filter coupled to improve switching arrangements is tested using both resonator ports to quickly measure selected resonator parameters useful in frequency adjustment, production and test systems as well as accurately measuring other filter crystal parameters, all without requiring removal of the crystal structure from the test fixture.