GB1295363A - - Google Patents

Info

Publication number
GB1295363A
GB1295363A GB1295363DA GB1295363A GB 1295363 A GB1295363 A GB 1295363A GB 1295363D A GB1295363D A GB 1295363DA GB 1295363 A GB1295363 A GB 1295363A
Authority
GB
United Kingdom
Prior art keywords
loudspeaker
felt
enclosure
housing
front wall
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
Other languages
English (en)
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 filed Critical
Publication of GB1295363A publication Critical patent/GB1295363A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
GB1295363D 1970-07-28 1970-07-28 Expired GB1295363A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3653770 1970-07-28

Publications (1)

Publication Number Publication Date
GB1295363A true GB1295363A (enrdf_load_stackoverflow) 1972-11-08

Family

ID=10389061

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1295363D Expired GB1295363A (enrdf_load_stackoverflow) 1970-07-28 1970-07-28

Country Status (1)

Country Link
GB (1) GB1295363A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2311187A (en) * 1996-03-13 1997-09-17 Motorola Inc Radiotelephone with an air gap provided between the speaker and sound ports

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2311187A (en) * 1996-03-13 1997-09-17 Motorola Inc Radiotelephone with an air gap provided between the speaker and sound ports
US6058315A (en) * 1996-03-13 2000-05-02 Motorola, Inc. Speaker assembly for a radiotelephone
GB2311187B (en) * 1996-03-13 2000-09-13 Motorola Inc Speaker assembly for a radio telephone

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees