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CONTINUOUS GRAMOPHONES LTD

Overview
  • Total Patents
    21
About

CONTINUOUS GRAMOPHONES LTD has a total of 21 patent applications. Its first patent ever was published in 1928. It filed its patents most often in Germany, United States and Spain. Its main competitors in its focus markets audio-visual technology are NITSUKIYOU SEISAKUSHO KK, GRAMMOPHON ACTIENGESELLSCHAFT and GUZENKO YURIJ M.

Patent filings in countries

World map showing CONTINUOUS GRAMOPHONES LTDs patent filings in countries
# Country Total Patents
#1 Germany 6
#2 United States 5
#3 Spain 3
#4 France 3
#5 Canada 2
#6 Austria 1
#7 United Kingdom 1

Patent filings per year

Chart showing CONTINUOUS GRAMOPHONES LTDs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Audio-visual technology

Focus technologies

# Technology
#1 Special information storage

Top inventors

# Name Total Patents
#1 Robert Oyston William 5
#2 Oyston William Robert 2

Latest patents

Publication Filing date Title
US1878311A Sound reproducing apparatus
US1869770A Sound reproducing apparatus
ES114604A1 A regulating mechanism for sound reproduction devices.
US1843401A Needle changing device
ES111950A1 Improvements in the talking machines of the type of repetition or warehouse.
GB312222A Improvements in talking machines of the magazine player type
US1892626A Talking machine of the magazine player type
US1868846A Sound reproducing apparatus
CA327839A Sound reproducing apparatus
CA318456A Talking machine