GB2130843B - Electro-acoustic transducer and adaptor therefor - Google Patents

Electro-acoustic transducer and adaptor therefor

Info

Publication number
GB2130843B
GB2130843B GB08232754A GB8232754A GB2130843B GB 2130843 B GB2130843 B GB 2130843B GB 08232754 A GB08232754 A GB 08232754A GB 8232754 A GB8232754 A GB 8232754A GB 2130843 B GB2130843 B GB 2130843B
Authority
GB
United Kingdom
Prior art keywords
electro
acoustic transducer
adaptor therefor
adaptor
therefor
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
GB08232754A
Other versions
GB2130843A (en
Inventor
David Valentine Charlesworth
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.)
AP Besson Ltd
Original Assignee
AP Besson Ltd
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 AP Besson Ltd filed Critical AP Besson Ltd
Priority to GB08232754A priority Critical patent/GB2130843B/en
Publication of GB2130843A publication Critical patent/GB2130843A/en
Application granted granted Critical
Publication of GB2130843B publication Critical patent/GB2130843B/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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • 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
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
GB08232754A 1982-11-17 1982-11-17 Electro-acoustic transducer and adaptor therefor Expired GB2130843B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08232754A GB2130843B (en) 1982-11-17 1982-11-17 Electro-acoustic transducer and adaptor therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08232754A GB2130843B (en) 1982-11-17 1982-11-17 Electro-acoustic transducer and adaptor therefor

Publications (2)

Publication Number Publication Date
GB2130843A GB2130843A (en) 1984-06-06
GB2130843B true GB2130843B (en) 1986-09-17

Family

ID=10534311

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08232754A Expired GB2130843B (en) 1982-11-17 1982-11-17 Electro-acoustic transducer and adaptor therefor

Country Status (1)

Country Link
GB (1) GB2130843B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE445162B (en) * 1984-10-12 1986-06-02 Ericsson Telefon Ab L M DEVICE FOR FIXING, ACOUSTIC SEAL AND VIBRATION INSULATION OF AN ELECTROACUSTIC CONVERTER IN A DEVICE SHEET
GB2180722B (en) * 1985-09-21 1989-09-13 Plessey Co Plc Acoustic seal
DE3608544C1 (en) * 1986-03-14 1987-04-09 Redco Nv Lightweight insulation panels and methods of making the same

Also Published As

Publication number Publication date
GB2130843A (en) 1984-06-06

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 20021116