GB191311198A - Improvements in and relating to Individual Telephone Mouth Pieces. - Google Patents

Improvements in and relating to Individual Telephone Mouth Pieces.

Info

Publication number
GB191311198A
GB191311198A GB191311198DA GB191311198A GB 191311198 A GB191311198 A GB 191311198A GB 191311198D A GB191311198D A GB 191311198DA GB 191311198 A GB191311198 A GB 191311198A
Authority
GB
United Kingdom
Prior art keywords
relating
mouthpieces
individual telephone
mouth pieces
telephone mouth
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
English (en)
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 GB191311198A publication Critical patent/GB191311198A/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)
  • Telephone Set Structure (AREA)
GB191311198D 1913-05-13 1913-05-13 Improvements in and relating to Individual Telephone Mouth Pieces. Expired GB191311198A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
GB191311198A true GB191311198A (en) 1913-09-18

Family

ID=32370659

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191311198D Expired GB191311198A (en) 1913-05-13 1913-05-13 Improvements in and relating to Individual Telephone Mouth Pieces.

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
FR458779A (fr) 1913-10-18
DE268938C (enrdf_load_stackoverflow)

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