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MACHIEL DE VRIES

Overview
  • Total Patents
    19
About

MACHIEL DE VRIES has a total of 19 patent applications. Its first patent ever was published in 1950. It filed its patents most often in United Kingdom, Germany and United States. Its main competitors in its focus markets audio-visual technology are ELIELI BOAZ, VRIES MACHIEL DE and ARIMA ACOUSTIC ENG CORPORATION.

Patent filings in countries

World map showing MACHIEL DE VRIESs patent filings in countries
# Country Total Patents
#1 United Kingdom 11
#2 Germany 7
#3 United States 1

Patent filings per year

Chart showing MACHIEL DE VRIESs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Audio-visual technology

Focus technologies

# Technology
#1 Loudspeakers and microphones

Top inventors

# Name Total Patents
#1 Vries Machiel De 7

Latest patents

Publication Filing date Title
GB983872A Improvements in or relating to stereophonic pick-ups
GB962810A Improvements in or relating to stereophonic pick-ups
GB941254A Improvements in or relating to stereophonic pick-up devices
GB919488A Improvements in or relating to pick-ups
GB903475A Improvements in or relating to stereophonic pick-up devices
GB836675A Improvements in or relating to pick-up elements
GB837952A Improvements in or relating to piezo-electric pick-ups
GB736357A Improvements in or relating to piezo-electric pick-ups
GB670868A A filter for sound vibrations and a microphone and telephone provided therewith