GB664141A - Amplification of telephone reception - Google Patents

Amplification of telephone reception

Info

Publication number
GB664141A
GB664141A GB2539/48A GB253948A GB664141A GB 664141 A GB664141 A GB 664141A GB 2539/48 A GB2539/48 A GB 2539/48A GB 253948 A GB253948 A GB 253948A GB 664141 A GB664141 A GB 664141A
Authority
GB
United Kingdom
Prior art keywords
receiver
loud
microphone
speaker
amplifier
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
GB2539/48A
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.)
MATTHYS LEONARDUS MICHEL SOUGE
Original Assignee
MATTHYS LEONARDUS MICHEL SOUGE
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 MATTHYS LEONARDUS MICHEL SOUGE filed Critical MATTHYS LEONARDUS MICHEL SOUGE
Publication of GB664141A publication Critical patent/GB664141A/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
    • H04M1/21—Combinations with auxiliary equipment, e.g. with clocks or memoranda pads
    • H04M1/215—Combinations with auxiliary equipment, e.g. with clocks or memoranda pads by non-intrusive coupling means, e.g. acoustic couplers
    • H04M1/2155—Acoustic coupling
    • 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
    • H04M1/21—Combinations with auxiliary equipment, e.g. with clocks or memoranda pads
    • H04M1/215—Combinations with auxiliary equipment, e.g. with clocks or memoranda pads by non-intrusive coupling means, e.g. acoustic couplers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/62—Constructional arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Telephone Set Structure (AREA)
  • Telephone Function (AREA)
GB2539/48A 1946-12-04 1948-01-28 Amplification of telephone reception Expired GB664141A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US713951A US2500264A (en) 1946-12-04 1946-12-04 Handset support and inductive pickup for telephone signal amplifying system

Publications (1)

Publication Number Publication Date
GB664141A true GB664141A (en) 1952-01-02

Family

ID=24868203

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2539/48A Expired GB664141A (en) 1946-12-04 1948-01-28 Amplification of telephone reception

Country Status (6)

Country Link
US (1) US2500264A (en:Method)
BE (1) BE479031A (en:Method)
CH (1) CH284628A (en:Method)
DE (1) DE842657C (en:Method)
FR (1) FR955737A (en:Method)
GB (1) GB664141A (en:Method)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2657265A (en) * 1948-01-23 1953-10-27 Branson John Charles Sydney Amplifying device for use with telephone apparatus
US2639329A (en) * 1951-03-27 1953-05-19 David J Ferrier Amplifying apparatus for use with telephones
US2820846A (en) * 1951-05-04 1958-01-21 Permoflux Corp Telephone recording pickups
DE1036323B (de) * 1955-05-05 1958-08-14 Matthijs Leonardus Michel Soug Vorrichtung zur Verstaerkung von Gespraechssignalen
US3102169A (en) * 1959-12-14 1963-08-27 Modern Telephones Great Britai Loudspeaking telephones

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1697007A (en) * 1929-01-01 Telephone system
US1630536A (en) * 1926-05-01 1927-05-31 Edward A Maurer Means of mechanically interconnecting separate telephone systems
US2071053A (en) * 1934-07-05 1937-02-16 Inter Outer Telephone Corp Inter-outer telephone system
US2160829A (en) * 1935-08-19 1939-06-06 Carl W Cherry Method and device for auxiliary transmission for telephone receivers
US2082130A (en) * 1935-08-24 1937-06-01 Inter Outer Telephone Corp Interior telephone equipment
US2214992A (en) * 1936-05-27 1940-09-17 Chevassus Gustave Receiver and transmitter for telephone desk sets
US2354470A (en) * 1942-06-29 1944-07-25 Topken Katherine Mcgill Support for telephone handsets
US2402341A (en) * 1944-10-06 1946-06-18 Allied Engineering Corp Voice amplifying device

Also Published As

Publication number Publication date
CH284628A (fr) 1952-07-31
FR955737A (en:Method) 1950-01-18
DE842657C (de) 1952-06-30
BE479031A (en:Method) 1948-01-31
US2500264A (en) 1950-03-14

Similar Documents

Publication Publication Date Title
US3156771A (en) Telephone loud-speaker combination
GB664141A (en) Amplification of telephone reception
GB620695A (en) Improvements in or relating to amplifying devices for use with telephone sets
JPS55147040A (en) Ear microphone of oscillation pickup type having transmitting and receiving unit
GB654830A (en) Improvements in or relating to communication apparatus
GB791895A (en) Improvements in or relating to telephone sets
CN201118573Y (zh) 具有无线音箱功能的无线耳机
GB638930A (en) Improvements in and relating to radio and intercommunication apparatus and systems
GB699883A (en) Improvements in or relating to telephone amplifiers
GB645360A (en) Telephone auxiliary amplifying device
JPS56117462A (en) Loudspeaking telephone device
JPS5468102A (en) Sound reinforcement system
US2575844A (en) Feedback neutralization means for telephone systems
CN202818572U (zh) 具有对讲功能的插卡音箱
GB662188A (en) Amplification means for telephones
KR950013125A (ko) 무선 전화기 시스템
JPS55137730A (en) Voice transmission/receiving unit utilizing ear-microphone
JPS56110317A (en) Sound volume controller
GB606015A (en) Improvements in or relating to wireless receiving apparatus
JPS5671337A (en) Small-sized transceiver for portable type
GB684633A (en) Improvements in or relating to amplifying devices for use with telephone apparatus
GB655229A (en) Improvements in or relating to operating circuits for moving-coil loudspeakers
ES292739A1 (es) Aparato amplificador telefënico
JPS55147866A (en) Extension circuit of key telephone unit
JPS5472611A (en) Squelch control system