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GB537524A - Improvements in or relating to microphones - Google Patents

Improvements in or relating to microphones

Info

Publication number
GB537524A
GB537524A GB161840A GB161840A GB537524A GB 537524 A GB537524 A GB 537524A GB 161840 A GB161840 A GB 161840A GB 161840 A GB161840 A GB 161840A GB 537524 A GB537524 A GB 537524A
Authority
GB
United Kingdom
Prior art keywords
fountain
push
microphones
relating
xxxix
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
GB161840A
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.)
GUY R FOUNTAIN Ltd
GUY RUPERT FOUNTAIN
Original Assignee
GUY R FOUNTAIN Ltd
GUY RUPERT FOUNTAIN
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 GUY R FOUNTAIN Ltd, GUY RUPERT FOUNTAIN filed Critical GUY R FOUNTAIN Ltd
Priority to GB161840A priority Critical patent/GB537524A/en
Publication of GB537524A publication Critical patent/GB537524A/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
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H04R1/083—Special constructions of mouthpieces

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Push-Button Switches (AREA)

Abstract

537,524. Retractive switches. FOUNTAIN, Ltd., G. R. FOUNTAIN, G. R. SNELL, A. E. C., and HOULGATE, H. J. Jan. 26, 1940, No. 1618. Addition to 507,183, [Group XXXIX]. [Class 38 (v)] [Also in Groups XXXIX anc XXXVI] A push-button switch has leaf spring contacts 24 which wipe the fixed contacts when the push-button 4 is depressed.
GB161840A 1940-01-26 1940-01-26 Improvements in or relating to microphones Expired GB537524A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB161840A GB537524A (en) 1940-01-26 1940-01-26 Improvements in or relating to microphones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB161840A GB537524A (en) 1940-01-26 1940-01-26 Improvements in or relating to microphones

Publications (1)

Publication Number Publication Date
GB537524A true GB537524A (en) 1941-06-25

Family

ID=9725056

Family Applications (1)

Application Number Title Priority Date Filing Date
GB161840A Expired GB537524A (en) 1940-01-26 1940-01-26 Improvements in or relating to microphones

Country Status (1)

Country Link
GB (1) GB537524A (en)

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