FR777946A - sophisticated micro-telephone equipment, for use by airmen in particular - Google Patents

sophisticated micro-telephone equipment, for use by airmen in particular

Info

Publication number
FR777946A
FR777946A FR777946DA FR777946A FR 777946 A FR777946 A FR 777946A FR 777946D A FR777946D A FR 777946DA FR 777946 A FR777946 A FR 777946A
Authority
FR
France
Prior art keywords
airmen
telephone equipment
sophisticated micro
sophisticated
micro
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)
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.)
SIF Societe Independante de Telegraphie Sans Fil
Original Assignee
SIF Societe Independante de Telegraphie Sans Fil
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 SIF Societe Independante de Telegraphie Sans Fil filed Critical SIF Societe Independante de Telegraphie Sans Fil
Application granted granted Critical
Publication of FR777946A publication Critical patent/FR777946A/en
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
    • H04M1/04—Supports for telephone transmitters or receivers
    • H04M1/05—Supports for telephone transmitters or receivers specially adapted for use on head, throat or breast

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR777946D 1933-11-22 1933-11-22 sophisticated micro-telephone equipment, for use by airmen in particular Expired FR777946A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR777946T 1933-11-22

Publications (1)

Publication Number Publication Date
FR777946A true FR777946A (en) 1935-03-05

Family

ID=9201899

Family Applications (1)

Application Number Title Priority Date Filing Date
FR777946D Expired FR777946A (en) 1933-11-22 1933-11-22 sophisticated micro-telephone equipment, for use by airmen in particular

Country Status (1)

Country Link
FR (1) FR777946A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4776044A (en) * 1987-07-30 1988-10-11 Makins J Patrick Hat with audio earphones

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4776044A (en) * 1987-07-30 1988-10-11 Makins J Patrick Hat with audio earphones

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