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. 01, 1977
Filed:
Nov. 21, 1975
John N Pierce, Lexington, MA (US);
Signatron, Inc., Lexington, MA (US);
Abstract
A signal multiplier for multiplying first and second input signals each having time-varying amplitudes and relatively wide bandwidths in which a first input signal is added to at least one sinusoidal reference signal having an amplitude larger than that of the first input signal. The amplitude of the signal so produced is limited and the limited amplitude signal is multiplied by the second input signal to produce an unfiltered signal. The signal components thereof having undesired frequency spectra are then filtered to produce a signal proportional to the product of the first and second input signals.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile