BE519944A - - Google Patents

Info

Publication number
BE519944A
BE519944A BE519944DA BE519944A BE 519944 A BE519944 A BE 519944A BE 519944D A BE519944D A BE 519944DA BE 519944 A BE519944 A BE 519944A
Authority
BE
Belgium
Application number
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.)
Publication of BE519944A publication Critical patent/BE519944A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
BE519944D 1952-02-13 BE519944A (US06291589-20010918-C00001.png)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB377652A GB726906A (en) 1952-02-13 1952-02-13 Improvements in or relating to tone generators for telecommunication systems

Publications (1)

Publication Number Publication Date
BE519944A true BE519944A (US06291589-20010918-C00001.png)

Family

ID=9764704

Family Applications (1)

Application Number Title Priority Date Filing Date
BE519944D BE519944A (US06291589-20010918-C00001.png) 1952-02-13

Country Status (2)

Country Link
BE (1) BE519944A (US06291589-20010918-C00001.png)
GB (1) GB726906A (US06291589-20010918-C00001.png)

Also Published As

Publication number Publication date
GB726906A (en) 1955-03-23

Similar Documents

Publication Publication Date Title
BE519814A (US06291589-20010918-C00001.png)
FR998974A (US06291589-20010918-C00001.png)
FR56533E (US06291589-20010918-C00001.png)
FR56448E (US06291589-20010918-C00001.png)
FR999023A (US06291589-20010918-C00001.png)
FR65874E (US06291589-20010918-C00001.png)
FR65877E (US06291589-20010918-C00001.png)
FR999014A (US06291589-20010918-C00001.png)
IT500462A (US06291589-20010918-C00001.png)
BE524389A (US06291589-20010918-C00001.png)
BE518323A (US06291589-20010918-C00001.png)
BE520589A (US06291589-20010918-C00001.png)
BE520453A (US06291589-20010918-C00001.png)
BE521688A (US06291589-20010918-C00001.png)
BE521838A (US06291589-20010918-C00001.png)
BE519690A (US06291589-20010918-C00001.png)
BE519680A (US06291589-20010918-C00001.png)
BE519944A (US06291589-20010918-C00001.png)
BE519671A (US06291589-20010918-C00001.png)
BE519492A (US06291589-20010918-C00001.png)
BE522965A (US06291589-20010918-C00001.png)
BE522155A (US06291589-20010918-C00001.png)
BE522586A (US06291589-20010918-C00001.png)
BE522635A (US06291589-20010918-C00001.png)
BE522698A (US06291589-20010918-C00001.png)