FR57340E - Amplificateur de réception téléphonique - Google Patents

Amplificateur de réception téléphonique

Info

Publication number
FR57340E
FR57340E FR57340DA FR57340E FR 57340 E FR57340 E FR 57340E FR 57340D A FR57340D A FR 57340DA FR 57340 E FR57340 E FR 57340E
Authority
FR
France
Prior art keywords
reception amplifier
telephone reception
telephone
amplifier
reception
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
English (en)
Inventor
Matthis Leonardus Miche Souget
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
Priority claimed from US713951A external-priority patent/US2500264A/en
Application filed filed Critical
Application granted granted Critical
Publication of FR57340E publication Critical patent/FR57340E/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/21—Combinations with auxiliary equipment, e.g. with clocks or memoranda pads
    • H04M1/215—Combinations with auxiliary equipment, e.g. with clocks or memoranda pads by non-intrusive coupling means, e.g. acoustic couplers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR57340D 1946-12-04 1948-05-18 Amplificateur de réception téléphonique Expired FR57340E (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US713951A US2500264A (en) 1946-12-04 1946-12-04 Handset support and inductive pickup for telephone signal amplifying system
FR57340T 1948-05-18

Publications (1)

Publication Number Publication Date
FR57340E true FR57340E (fr) 1953-01-02

Family

ID=26182860

Family Applications (1)

Application Number Title Priority Date Filing Date
FR57340D Expired FR57340E (fr) 1946-12-04 1948-05-18 Amplificateur de réception téléphonique

Country Status (1)

Country Link
FR (1) FR57340E (fr)

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