FR714777A - Devices for the permanent asepticization of telephones - Google Patents

Devices for the permanent asepticization of telephones

Info

Publication number
FR714777A
FR714777A FR714777DA FR714777A FR 714777 A FR714777 A FR 714777A FR 714777D A FR714777D A FR 714777DA FR 714777 A FR714777 A FR 714777A
Authority
FR
France
Prior art keywords
asepticization
telephones
permanent
devices
permanent asepticization
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
Jean Chauvin
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 FR714777A publication Critical patent/FR714777A/en
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)
FR714777D 1931-04-03 1931-04-03 Devices for the permanent asepticization of telephones Expired FR714777A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR714777T 1931-04-03

Publications (1)

Publication Number Publication Date
FR714777A true FR714777A (en) 1931-11-19

Family

ID=9088475

Family Applications (1)

Application Number Title Priority Date Filing Date
FR714777D Expired FR714777A (en) 1931-04-03 1931-04-03 Devices for the permanent asepticization of telephones

Country Status (1)

Country Link
FR (1) FR714777A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2741666A (en) * 1953-01-02 1956-04-10 Lutz Max Attachment for telephone mouthpiece
FR2499793A1 (en) * 1981-02-06 1982-08-13 Agudo Mendez Lorenzo Telephone mouthpiece air purifier - consists of cylindrical envelope with circular cavity containing antiseptic or air freshener products

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2741666A (en) * 1953-01-02 1956-04-10 Lutz Max Attachment for telephone mouthpiece
FR2499793A1 (en) * 1981-02-06 1982-08-13 Agudo Mendez Lorenzo Telephone mouthpiece air purifier - consists of cylindrical envelope with circular cavity containing antiseptic or air freshener products

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