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FR331934A - Preservation device for phones - Google Patents

Preservation device for phones

Info

Publication number
FR331934A
FR331934A FR331934DA FR331934A FR 331934 A FR331934 A FR 331934A FR 331934D A FR331934D A FR 331934DA FR 331934 A FR331934 A FR 331934A
Authority
FR
France
Prior art keywords
phones
preservation device
preservation
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
Joseph Effertz
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 FR331934A publication Critical patent/FR331934A/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)
FR331934D 1903-05-11 1903-05-11 Preservation device for phones Expired FR331934A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR331934T 1903-05-11

Publications (1)

Publication Number Publication Date
FR331934A true FR331934A (en) 1903-10-08

Family

ID=1381616

Family Applications (1)

Application Number Title Priority Date Filing Date
FR331934D Expired FR331934A (en) 1903-05-11 1903-05-11 Preservation device for phones

Country Status (1)

Country Link
FR (1) FR331934A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0330805A1 (en) * 1988-03-01 1989-09-06 Luciano Cavini Accessory to fit on telephones and intercoms to avoid contagions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0330805A1 (en) * 1988-03-01 1989-09-06 Luciano Cavini Accessory to fit on telephones and intercoms to avoid contagions

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