GB327926A - Telephone mufflers - Google Patents

Telephone mufflers

Info

Publication number
GB327926A
GB327926A GB22353/29A GB2235329A GB327926A GB 327926 A GB327926 A GB 327926A GB 22353/29 A GB22353/29 A GB 22353/29A GB 2235329 A GB2235329 A GB 2235329A GB 327926 A GB327926 A GB 327926A
Authority
GB
United Kingdom
Prior art keywords
telephone
side wall
opening
box
mouthpiece
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
GB22353/29A
Other languages
English (en)
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
Priority to US375065A priority Critical patent/US1800234A/en
Application filed by Individual filed Critical Individual
Priority to GB22353/29A priority patent/GB327926A/en
Priority to NL47411A priority patent/NL26028C/xx
Priority to DET37363D priority patent/DE518223C/de
Priority to FR679978D priority patent/FR679978A/fr
Priority to BE362912D priority patent/BE362912A/xx
Publication of GB327926A publication Critical patent/GB327926A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/19—Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
GB22353/29A 1929-07-01 1929-07-20 Telephone mufflers Expired GB327926A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US375065A US1800234A (en) 1929-07-01 1929-07-01 Telephone muffler
GB22353/29A GB327926A (en) 1929-07-20 1929-07-20 Telephone mufflers
NL47411A NL26028C (enrdf_load_stackoverflow) 1929-07-20 1929-07-27
DET37363D DE518223C (de) 1929-07-20 1929-08-06 Vorrichtung zum Abdaempfen von Lauten fuer Mikrotelefone
FR679978D FR679978A (fr) 1929-07-20 1929-08-07 Perfectionnements apportés aux étouffeurs de voix pour téléphones
BE362912D BE362912A (enrdf_load_stackoverflow) 1929-07-20 1929-08-09

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB22353/29A GB327926A (en) 1929-07-20 1929-07-20 Telephone mufflers

Publications (1)

Publication Number Publication Date
GB327926A true GB327926A (en) 1930-04-17

Family

ID=10178021

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22353/29A Expired GB327926A (en) 1929-07-01 1929-07-20 Telephone mufflers

Country Status (6)

Country Link
US (1) US1800234A (enrdf_load_stackoverflow)
BE (1) BE362912A (enrdf_load_stackoverflow)
DE (1) DE518223C (enrdf_load_stackoverflow)
FR (1) FR679978A (enrdf_load_stackoverflow)
GB (1) GB327926A (enrdf_load_stackoverflow)
NL (1) NL26028C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2458199A (en) * 1947-04-15 1949-01-04 Albert C Reinhold Telephone transmitter support and silencer

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL287590A (enrdf_load_stackoverflow) * 1962-01-09
US3925616A (en) * 1974-04-30 1975-12-09 Bell Telephone Labor Inc Apparatus for determining the glottal waveform
US9253299B2 (en) 2014-02-18 2016-02-02 Quiet, Inc. Ergonomic tubular anechoic chambers for use with a communication device and related methods
US9576567B2 (en) 2014-02-18 2017-02-21 Quiet, Inc. Ergonomic tubular anechoic chambers for use with a communication device and related methods
US9525765B2 (en) 2014-02-18 2016-12-20 Quiet, Inc. Ergonomic anechoic anti-noise canceling chamber for use with a communication device and related methods
US8948411B1 (en) * 2014-02-18 2015-02-03 Scott A. Moser Ergonomic tubular anechoic chambers for use with a communication device and related methods
US9614945B1 (en) 2014-02-18 2017-04-04 Quiet, Inc. Anti-noise canceling headset and related methods
US9386135B2 (en) 2014-05-16 2016-07-05 Quiet, Inc. Ergonomic tubular anechoic chambers for use with a communication device and related methods

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2458199A (en) * 1947-04-15 1949-01-04 Albert C Reinhold Telephone transmitter support and silencer

Also Published As

Publication number Publication date
US1800234A (en) 1931-04-14
DE518223C (de) 1931-02-20
FR679978A (fr) 1930-04-23
BE362912A (enrdf_load_stackoverflow) 1929-09-30
NL26028C (enrdf_load_stackoverflow) 1932-09-15

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