GB175660A - Sound recording and reproducing devices - Google Patents

Sound recording and reproducing devices

Info

Publication number
GB175660A
GB175660A GB4964/22A GB496422A GB175660A GB 175660 A GB175660 A GB 175660A GB 4964/22 A GB4964/22 A GB 4964/22A GB 496422 A GB496422 A GB 496422A GB 175660 A GB175660 A GB 175660A
Authority
GB
United Kingdom
Prior art keywords
sound recording
reproducing devices
reproducing
devices
sound
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
GB4964/22A
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.)
JOSEPH FRANCIS O BRIEN
Original Assignee
JOSEPH FRANCIS O BRIEN
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 JOSEPH FRANCIS O BRIEN filed Critical JOSEPH FRANCIS O BRIEN
Publication of GB175660A publication Critical patent/GB175660A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
GB4964/22A 1921-02-18 1922-02-20 Sound recording and reproducing devices Expired GB175660A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US175660XA 1921-02-18 1921-02-18

Publications (1)

Publication Number Publication Date
GB175660A true GB175660A (en) 1922-08-10

Family

ID=21783301

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4964/22A Expired GB175660A (en) 1921-02-18 1922-02-20 Sound recording and reproducing devices

Country Status (1)

Country Link
GB (1) GB175660A (en)

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