FR458779A - Embouchure de téléphone individuelle - Google Patents

Embouchure de téléphone individuelle

Info

Publication number
FR458779A
FR458779A FR458779A FR458779DA FR458779A FR 458779 A FR458779 A FR 458779A FR 458779 A FR458779 A FR 458779A FR 458779D A FR458779D A FR 458779DA FR 458779 A FR458779 A FR 458779A
Authority
FR
France
Prior art keywords
individual telephone
telephone mouthpiece
mouthpiece
individual
telephone
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
FR458779A
Other languages
English (en)
French (fr)
Inventor
Clarence Sylvester Warren
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 FR458779A publication Critical patent/FR458779A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/12—Sanitary or hygienic devices for mouthpieces or earpieces, e.g. for protecting against infection

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
FR458779A 1913-05-13 1913-05-29 Embouchure de téléphone individuelle Expired FR458779A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191311198T 1913-05-13

Publications (1)

Publication Number Publication Date
FR458779A true FR458779A (fr) 1913-10-18

Family

ID=32370659

Family Applications (1)

Application Number Title Priority Date Filing Date
FR458779A Expired FR458779A (fr) 1913-05-13 1913-05-29 Embouchure de téléphone individuelle

Country Status (3)

Country Link
DE (1) DE268938C (enrdf_load_stackoverflow)
FR (1) FR458779A (enrdf_load_stackoverflow)
GB (1) GB191311198A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
DE268938C (enrdf_load_stackoverflow)
GB191311198A (en) 1913-09-18

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