FR352956A - Hygienic protection device for telephone devices - Google Patents

Hygienic protection device for telephone devices

Info

Publication number
FR352956A
FR352956A FR352956DA FR352956A FR 352956 A FR352956 A FR 352956A FR 352956D A FR352956D A FR 352956DA FR 352956 A FR352956 A FR 352956A
Authority
FR
France
Prior art keywords
protection device
telephone devices
hygienic protection
hygienic
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
Other languages
French (fr)
Inventor
Bernhard Ehrlich
Max Konrad
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 FR352956A publication Critical patent/FR352956A/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)
FR352956D 1905-04-04 1905-04-04 Hygienic protection device for telephone devices Expired FR352956A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR352956T 1905-04-04

Publications (1)

Publication Number Publication Date
FR352956A true FR352956A (en) 1905-08-30

Family

ID=1401152

Family Applications (1)

Application Number Title Priority Date Filing Date
FR352956D Expired FR352956A (en) 1905-04-04 1905-04-04 Hygienic protection device for telephone devices

Country Status (1)

Country Link
FR (1) FR352956A (en)

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