GB191001707A - Improvements in or relating to Telephone Transmitters. - Google Patents

Improvements in or relating to Telephone Transmitters.

Info

Publication number
GB191001707A
GB191001707A GB191001707DA GB191001707A GB 191001707 A GB191001707 A GB 191001707A GB 191001707D A GB191001707D A GB 191001707DA GB 191001707 A GB191001707 A GB 191001707A
Authority
GB
United Kingdom
Prior art keywords
relating
telephone transmitters
transmitters
telephone
attacbment
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
Inventor
Alfred Julius Boult
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 GB191001707A publication Critical patent/GB191001707A/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)

Abstract

1707. Boult, A. J., [Maxwell, B. C.]. Jan. 22. Mouthpieces. - In addition to the ordinary mouthpiece A, an annular attachment B is provided to deflect away the outgoing sound-waves, dirt, &c. The attacbment is held by clasps C and has a removable centre-piece b<2> of paper.
GB191001707D 1910-01-22 1910-01-22 Improvements in or relating to Telephone Transmitters. Expired GB191001707A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191001707T 1910-01-22

Publications (1)

Publication Number Publication Date
GB191001707A true GB191001707A (en) 1910-03-17

Family

ID=32559877

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191001707D Expired GB191001707A (en) 1910-01-22 1910-01-22 Improvements in or relating to Telephone Transmitters.

Country Status (1)

Country Link
GB (1) GB191001707A (en)

Similar Documents

Publication Publication Date Title
GB191001707A (en) Improvements in or relating to Telephone Transmitters.
GB611558A (en) Improvements in or relating to telephone instruments
GB451178A (en) Improvements in loud speakers
GB191202336A (en) Improvements in Sanitary Protectors for Telephone Transmitters.
GB190813842A (en) A Disinfected Mouthpiece and Earcap for Attaching to Existing Mouthpieces and Earcaps of Telephones.
GB191129195A (en) Improvements in Telephonic Transmitters.
GB191122582A (en) Improvements in and relating to Telephonic Transmitters, Receivers, and other like Diaphragm Instruments.
GB191230111A (en) Improvements in Ear- and Mouth-piece Protectors for Telephones.
GB191126516A (en) Improvements in and relating to Telephone Instruments.
GB191018876A (en) Improvements in Tobacco Pipes.
GB190712761A (en) Improvements connected with Telephone Transmitters and Receivers.
GB191004446A (en) Improvement in Telephone Transmitters.
GB190917137A (en) Improvements in Sound Intensifiers for Telephone Mouth-pieces and the like.
GB190905114A (en) Secret Telephone Transmitters.
GB190817612A (en) Improvements in and relating to Means for the Constant Disinfection of Speaking Tubes, Telephone Mouth-pieces or the like.
GB191121814A (en) Improvements in or relating to Telephone or like Instruments.
GB191209338A (en) A New or Improved Device for Disinfecting Telephone Mouthpieces and other similar Instruments.
GB190525464A (en) Improvements in or relating to Mouth-pieces for Telephones.
GB782966A (en) Telephone handset with extensions for providing privacy to the user
GB190814805A (en) Antiseptic Attachment for Telephone Mouthpieces
GB148312A (en) Improvements in and relating to telephony
GB342306A (en) Improvements in damping arrangements for acoustic devices particularly applicable for telephone transmitters or the like
GB372472A (en) Improved diaphragm for gramophone sound boxes, telephone receivers and the like
GB191120434A (en) Improvements in and relating to the Diaphragms of Telephonic Receivers and like Instruments.
GB191003179A (en) Improvements in Microphones.