FR988572A - Improvements to low frequency multiplier devices - Google Patents

Improvements to low frequency multiplier devices

Info

Publication number
FR988572A
FR988572A FR988572DA FR988572A FR 988572 A FR988572 A FR 988572A FR 988572D A FR988572D A FR 988572DA FR 988572 A FR988572 A FR 988572A
Authority
FR
France
Prior art keywords
low frequency
frequency multiplier
multiplier devices
devices
low
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
Pierre Pelle
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 FR988572A publication Critical patent/FR988572A/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)
FR988572D 1944-01-11 1944-01-11 Improvements to low frequency multiplier devices Expired FR988572A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR988572T 1944-01-11

Publications (1)

Publication Number Publication Date
FR988572A true FR988572A (en) 1951-08-29

Family

ID=9539580

Family Applications (1)

Application Number Title Priority Date Filing Date
FR988572D Expired FR988572A (en) 1944-01-11 1944-01-11 Improvements to low frequency multiplier devices

Country Status (1)

Country Link
FR (1) FR988572A (en)

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