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BETULANDER AUTOMATIC TELEPHONE

Overview
  • Total Patents
    19
About

BETULANDER AUTOMATIC TELEPHONE has a total of 19 patent applications. Its first patent ever was published in 1913. It filed its patents most often in United Kingdom, Austria and Germany. Its main competitors in its focus markets telecommunications and electrical machinery and energy are ET CIE), PICART LEBAS TELEPHONES and FERNSPRECH UND SIGNALBAU GMBH.

Patent filings in countries

World map showing BETULANDER AUTOMATIC TELEPHONEs patent filings in countries
# Country Total Patents
#1 United Kingdom 9
#2 Austria 3
#3 Germany 3
#4 Denmark 2
#5 Switzerland 1
#6 Finland 1

Patent filings per year

Chart showing BETULANDER AUTOMATIC TELEPHONEs patent filings per year from 1900 to 2020

Focus technologies

# Technology
#1 Telephonic communication
#2 Electric switches

Top inventors

# Name Total Patents
#1 Palmgren N G 1
#2 Limited The Betulander Automat 1
#3 Betulander G A 1

Latest patents

Publication Filing date Title
GB191501470A Improvements in Automatic and Semi-automatic Telephone Systems.
GB191501471A Improvements in Automatic and Semi-automatic Telephone Systems.
GB191500580A Improvements in Manual and Semi-automatic Telephone Systems.
GB191422715A Improvements in Automatic and Semi-automatic Telephone Systems.
GB191420453A Improvements in Telephone Exchange Systems.
GB191416411A Improvements in Automatic Telephone Systems.
DE321984C Circuit arrangement for automatically or semi-automatically operated telephone systems
GB191413173A Improvements in Automatic Telephone Exchange Connexions.
GB191407218A Improvements in or relating to Electrical Impulse Transmitters and the like.
GB191406209A Improvements in or relating to Electrical Impluse Transmitters and the like.
DE335981C Circuit arrangement for automatically or semi-automatically operated telephone systems
DE323711C Dialers, especially for self-operated telephone systems