GB190223753A - Improvements in and relating to Telephones. - Google Patents

Improvements in and relating to Telephones.

Info

Publication number
GB190223753A
GB190223753A GB190223753DA GB190223753A GB 190223753 A GB190223753 A GB 190223753A GB 190223753D A GB190223753D A GB 190223753DA GB 190223753 A GB190223753 A GB 190223753A
Authority
GB
United Kingdom
Prior art keywords
telephones
relating
lever
bell contact
birnbaum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Inventor
Isidore Bernard Birnbaum
Joseph Berliner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of GB190223753A publication Critical patent/GB190223753A/en
Expired legal-status Critical Current

Links

Landscapes

  • Electromechanical Clocks (AREA)

Abstract

23,753. Birnbaum. I. B., and Berliner, J. Oct. 30. Telephones.-Relates to hand telephone combination apparatus. The switch lever 2 is provided with an extension. which completely covers the bell contact 1. The bell contact is broken and the talking-circuit completed w h e n the lever is pressed.
GB190223753D 1902-10-30 1902-10-30 Improvements in and relating to Telephones. Expired GB190223753A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190223753T 1902-10-30

Publications (1)

Publication Number Publication Date
GB190223753A true GB190223753A (en) 1903-01-01

Family

ID=32364798

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190223753D Expired GB190223753A (en) 1902-10-30 1902-10-30 Improvements in and relating to Telephones.

Country Status (1)

Country Link
GB (1) GB190223753A (en)

Similar Documents

Publication Publication Date Title
GB190223753A (en) Improvements in and relating to Telephones.
SE8000793L (en) Pushbutton stellare
US1251695A (en) Cut-out device for telephone-transmitters.
US808868A (en) Telephone signaling apparatus.
US673512A (en) Microtelephonic apparatus.
US241963A (en) Secrecy-switch for telephones
US858775A (en) Night-service attachment for telephone-lines.
US324248A (en) Iienby k
CA89517A (en) Ringing key for telephone switchboards
AU585506B (en) An improved combined portable telephone and telegraph instrument
GB190212780A (en) Improvements relating to Telephone Installations.
US811029A (en) Telephone for ships, mines, &c.
AU799307B (en) Improvements relating to portable telephone and telegraph apparatus
US854552A (en) Telephone-switch.
GB190306671A (en) Improvements in or relating to Telephonic or Electric Signalling Apparatus.
FR359519A (en) Automatic switch combined with call key, particularly applicable to telephone devices
US349043A (en) Cornelius herz
AU585506A (en) An improved combined portable telephone and telegraph instrument
GB190604221A (en) Improvements in Oscillaphones or Hertzian Wave Responsive Devices.
GB190509702A (en) Improved Field Telephone and Telegraph Apparatus
CA89518A (en) Ringing key for telephone switchboards
GB190307184A (en) Improvements in and relating to Switching Devices for Intercommunication Telephones.
FR492993A (en) Improvements to telegraph or telephone apparatus, more particularly applicable to field telegraphs and portable telephones
GB190227497A (en) Improvements in Watertight Cases for Electric Bells & Telephones.
GB190210938A (en) An Improved Electric Switch.