GB191315783A - Improvements in or relating to Sound Transmitting Apparatus. - Google Patents

Improvements in or relating to Sound Transmitting Apparatus.

Info

Publication number
GB191315783A
GB191315783A GB191315783DA GB191315783A GB 191315783 A GB191315783 A GB 191315783A GB 191315783D A GB191315783D A GB 191315783DA GB 191315783 A GB191315783 A GB 191315783A
Authority
GB
United Kingdom
Prior art keywords
relating
transmitting apparatus
sound transmitting
sound
transmitting
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
Inventor
Walter Howley Derriman
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
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of GB191315783A publication Critical patent/GB191315783A/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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/023—Screens for loudspeakers
    • 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
    • H04R1/46—Special adaptations for use as contact microphones, e.g. on musical instrument, on stethoscope
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R21/00—Variable-resistance transducers
    • H04R21/02—Microphones
    • H04R21/023—Microphones with more than one granular chamber
GB191315783D 1912-11-13 1913-07-08 Improvements in or relating to Sound Transmitting Apparatus. Expired GB191315783A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US464817XA 1912-11-13 1912-11-13

Publications (1)

Publication Number Publication Date
GB191315783A true GB191315783A (en) 1914-07-08

Family

ID=32371859

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191315783D Expired GB191315783A (en) 1912-11-13 1913-07-08 Improvements in or relating to Sound Transmitting Apparatus.

Country Status (2)

Country Link
FR (1) FR464817A (en)
GB (1) GB191315783A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3591329A1 (en) 2018-07-05 2020-01-08 Heckler & Koch GmbH Breech block catch with locking device of a self-loading firearm and weapon handle with same and weapon housing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3591329A1 (en) 2018-07-05 2020-01-08 Heckler & Koch GmbH Breech block catch with locking device of a self-loading firearm and weapon handle with same and weapon housing

Also Published As

Publication number Publication date
FR464817A (en) 1914-03-31

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