GB266271A - Improvements in or relating to telephone loud speakers - Google Patents

Improvements in or relating to telephone loud speakers

Info

Publication number
GB266271A
GB266271A GB3011525A GB3011525A GB266271A GB 266271 A GB266271 A GB 266271A GB 3011525 A GB3011525 A GB 3011525A GB 3011525 A GB3011525 A GB 3011525A GB 266271 A GB266271 A GB 266271A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
cones
apex
casing
reed
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
GB3011525A
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 NL20171D priority Critical patent/NL20171C/xx
Application filed by Individual filed Critical Individual
Priority to GB3011525A priority patent/GB266271A/en
Priority to FR623916D priority patent/FR623916A/fr
Priority to DEB128039D priority patent/DE480366C/de
Publication of GB266271A publication Critical patent/GB266271A/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
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/02—Loudspeakers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
GB3011525A 1925-11-28 1925-11-28 Improvements in or relating to telephone loud speakers Expired GB266271A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL20171D NL20171C (enrdf_load_stackoverflow) 1925-11-28
GB3011525A GB266271A (en) 1925-11-28 1925-11-28 Improvements in or relating to telephone loud speakers
FR623916D FR623916A (fr) 1925-11-28 1926-10-29 Perfectionnements aux hauts-parleurs téléphoniques
DEB128039D DE480366C (de) 1925-11-28 1926-10-31 Trichterloser Lautsprecher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3011525A GB266271A (en) 1925-11-28 1925-11-28 Improvements in or relating to telephone loud speakers

Publications (1)

Publication Number Publication Date
GB266271A true GB266271A (en) 1927-02-24

Family

ID=10302513

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3011525A Expired GB266271A (en) 1925-11-28 1925-11-28 Improvements in or relating to telephone loud speakers

Country Status (4)

Country Link
DE (1) DE480366C (enrdf_load_stackoverflow)
FR (1) FR623916A (enrdf_load_stackoverflow)
GB (1) GB266271A (enrdf_load_stackoverflow)
NL (1) NL20171C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
DE480366C (de) 1929-08-01
FR623916A (fr) 1927-07-04
NL20171C (enrdf_load_stackoverflow)

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