GB121016A - Improvements in Silencing Pads for Telephone or Speaking Tube Earpieces and Earstoppers. - Google Patents

Improvements in Silencing Pads for Telephone or Speaking Tube Earpieces and Earstoppers.

Info

Publication number
GB121016A
GB121016A GB55718A GB55718A GB121016A GB 121016 A GB121016 A GB 121016A GB 55718 A GB55718 A GB 55718A GB 55718 A GB55718 A GB 55718A GB 121016 A GB121016 A GB 121016A
Authority
GB
United Kingdom
Prior art keywords
earstoppers
earpieces
telephone
speaking tube
silencing pads
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
GB55718A
Inventor
Alfred Charles Brown
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
Priority to GB55718A priority Critical patent/GB121016A/en
Publication of GB121016A publication Critical patent/GB121016A/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
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1008—Earpieces of the supra-aural or circum-aural type

Abstract

121,016. Brown, A. C. Jan. 9,1918 Speaking-tubes.-The earpiece of a speaking- tube is provided with an annular tube a filled with liquid and secured to the earpiece by a clip c. Specification 12945/90 is referred to.
GB55718A 1918-01-09 1918-01-09 Improvements in Silencing Pads for Telephone or Speaking Tube Earpieces and Earstoppers. Expired GB121016A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB55718A GB121016A (en) 1918-01-09 1918-01-09 Improvements in Silencing Pads for Telephone or Speaking Tube Earpieces and Earstoppers.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB55718A GB121016A (en) 1918-01-09 1918-01-09 Improvements in Silencing Pads for Telephone or Speaking Tube Earpieces and Earstoppers.

Publications (1)

Publication Number Publication Date
GB121016A true GB121016A (en) 1918-12-05

Family

ID=32340231

Family Applications (1)

Application Number Title Priority Date Filing Date
GB55718A Expired GB121016A (en) 1918-01-09 1918-01-09 Improvements in Silencing Pads for Telephone or Speaking Tube Earpieces and Earstoppers.

Country Status (1)

Country Link
GB (1) GB121016A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1267787B (en) * 1954-05-20 1968-05-09 Nat Res Council Noise protection device in the manner of ear defenders
US6485479B1 (en) 1997-04-26 2002-11-26 Fresenius Ag Sterile connector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1267787B (en) * 1954-05-20 1968-05-09 Nat Res Council Noise protection device in the manner of ear defenders
US6485479B1 (en) 1997-04-26 2002-11-26 Fresenius Ag Sterile connector

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