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CAMBRIDGE RES & DEV GROUP

Overview
  • Total Patents
    38
About

CAMBRIDGE RES & DEV GROUP has a total of 38 patent applications. Its first patent ever was published in 1966. It filed its patents most often in United States, Canada and Germany. Its main competitors in its focus markets computer technology, basic communication technologies and audio-visual technology are RECOTON CORP, VARIABLE SPEECH CONTROL and HASEGAWA KAZUO.

Patent filings per year

Chart showing CAMBRIDGE RES & DEV GROUPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Schiffman Murray M 5
#2 Sherman Lawrence M 3
#3 Richardson James E 3
#4 Richardson J 2
#5 Greenberg Sanford David 2
#6 Schiffman M 2
#7 Richardson J E 1
#8 M Sherman Lawrence 1
#9 Swain Stephen C 1
#10 Norvell Bert E 1

Latest patents

Publication Filing date Title
US4252787A Anti-fertility composition and method
US3936610A Dual delay line storage sound signal processor
SU656557A3 Device for reproducing sound signal
DE2404282A1 SPEECH PRESSER
CA988859A Speech-compressor
US3869708A Speech compressor with gap filling
US3876111A Plural chambered squeeze tube
US3851800A Plural chambered, gravity oriented dispenser
US3846827A Speech compressor-expander with signal sample zero reset
US3906384A System for nullifying signal processor distortions
US3840814A System for generating pulses of linearly varying period
US3828361A Speech compressor-expander
KR790000012B1 Variable delay line signal processor for soun reproduction
DE2238136A1 CONTROLLED SIGNAL PROCESSOR WITH DELAY LINE FOR SOUND REPRODUCTION
US3850346A Hand squeezable, plural chambered, liquid dispenser
US3838218A Bifrequency controlled analog shift register speech processor
IL35751D0 Coital timing device
US3712614A Swing seat
US3604623A Coital timing device
US3651927A Tablet dispenser