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:
Dec. 11, 1979
Filed:
Feb. 24, 1978
Applicant:
Inventor:
Mark S Hoffman, Newton Center, MA (US);
Assignee:
Teradyne, Inc., Boston, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
324 64 ; 324 / ; 324 / ;
Abstract
Circuitry for making electrical measurements with low level ac signals, featuring a transformer with a coaxial cable primary having its outer shield grounded to provide an electrostatic shield, and a probe cable for a three-tipped probe in which four wires are arranged in two twisted pairs, one tip is connected to a wire in each pair, and the other two tips are respectively connected to the remaining two wires.