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FR535326A - Enhancements to magneto-operated telephone ringtones - Google Patents

Enhancements to magneto-operated telephone ringtones

Info

Publication number
FR535326A
FR535326A FR535326DA FR535326A FR 535326 A FR535326 A FR 535326A FR 535326D A FR535326D A FR 535326DA FR 535326 A FR535326 A FR 535326A
Authority
FR
France
Prior art keywords
enhancements
magneto
operated telephone
telephone ringtones
ringtones
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
Other languages
French (fr)
Inventor
Esprit E Tonna-Barthet
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 filed Critical
Application granted granted Critical
Publication of FR535326A publication Critical patent/FR535326A/en
Expired legal-status Critical Current

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)
FR535326D 1921-05-10 1921-05-10 Enhancements to magneto-operated telephone ringtones Expired FR535326A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR535326T 1921-05-10

Publications (1)

Publication Number Publication Date
FR535326A true FR535326A (en) 1922-04-13

Family

ID=8926098

Family Applications (1)

Application Number Title Priority Date Filing Date
FR535326D Expired FR535326A (en) 1921-05-10 1921-05-10 Enhancements to magneto-operated telephone ringtones

Country Status (1)

Country Link
FR (1) FR535326A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2877159A1 (en) * 2004-10-22 2006-04-28 Houssine Alain El INDUCTION ELECTROGENERATOR WITH MAGNETIC GEAR

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2877159A1 (en) * 2004-10-22 2006-04-28 Houssine Alain El INDUCTION ELECTROGENERATOR WITH MAGNETIC GEAR

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