FR365195A - Micro-téléphone fonctionnant par la résonance de la tete - Google Patents

Micro-téléphone fonctionnant par la résonance de la tete

Info

Publication number
FR365195A
FR365195A FR365195DA FR365195A FR 365195 A FR365195 A FR 365195A FR 365195D A FR365195D A FR 365195DA FR 365195 A FR365195 A FR 365195A
Authority
FR
France
Prior art keywords
micro
telephone operating
head resonance
resonance
head
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)
French (fr)
Inventor
Gustav Hellfritsch
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 FR365195A publication Critical patent/FR365195A/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
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
FR365195D 1905-04-15 1906-04-13 Micro-téléphone fonctionnant par la résonance de la tete Expired FR365195A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE168947T 1905-04-15

Publications (1)

Publication Number Publication Date
FR365195A true FR365195A (fr) 1906-09-04

Family

ID=5687505

Family Applications (1)

Application Number Title Priority Date Filing Date
FR365195D Expired FR365195A (fr) 1905-04-15 1906-04-13 Micro-téléphone fonctionnant par la résonance de la tete

Country Status (2)

Country Link
DE (2) DE168947C (enrdf_load_stackoverflow)
FR (1) FR365195A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1204272B (de) * 1960-02-24 1965-11-04 Louis Ernest Bonnin Sprachgarnitur

Also Published As

Publication number Publication date
DE185200C (enrdf_load_stackoverflow)
DE168947C (enrdf_load_stackoverflow)

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