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P R T LAB LTD

Overview
  • Total Patents
    18
About

P R T LAB LTD has a total of 18 patent applications. Its first patent ever was published in 1944. It filed its patents most often in United Kingdom, France and Ireland. Its main competitors in its focus markets basic communication technologies, audio-visual technology and measurement are NANJING GIANT MACHINERY CO LTD, YAMAGISHI MASAHARU and TSUOISU KK.

Patent filings in countries

World map showing P R T LAB LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 16
#2 France 1
#3 Ireland 1

Patent filings per year

Chart showing P R T LAB LTDs patent filings per year from 1900 to 2020

Latest patents

Publication Filing date Title
IE17785L Screening arrangements
GB620956A Improvements in or relating to heating and drying by radio frequency currents
GB634177A Improvements in or relating to counting apparatus
GB624470A Improvements in or relating to electrical impulse counting mechanism
GB628579A Improvements in or relating to cathode ray tube oscillograph apparatus
GB625042A Improvements in or relating to thermionic valve oscillation generators
GB622830A Improvements in or relating to electro/acoustic transducer arrangements
GB618464A Improvements in or relating to diathermic seaming apparatus
GB625431A Improvements in or relating to motion transmitting devices
GB627568A Improvements in or relating to television receiving apparatus
GB624435A Improvements in or relating to radio receiving apparatus
GB611989A Improvements in or relating to radio receivers
GB611981A Improvements in or relating to television receiving circuits
GB610500A Improvements in or relating to screening means for radio and electrical apparatus
GB609651A Improvements in or relating to variable-speed motion-transmitting devices
GB599201A Improvements in or relating to high frequency amplifiers
GB589562A Improvements in or relating to frequency determining arrangements