GB173267A - Improvements in sound reproducing devices for gramophones and the like - Google Patents

Improvements in sound reproducing devices for gramophones and the like

Info

Publication number
GB173267A
GB173267A GB2442420A GB2442420A GB173267A GB 173267 A GB173267 A GB 173267A GB 2442420 A GB2442420 A GB 2442420A GB 2442420 A GB2442420 A GB 2442420A GB 173267 A GB173267 A GB 173267A
Authority
GB
United Kingdom
Prior art keywords
gramophones
sound reproducing
reproducing devices
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
GB2442420A
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
Priority to GB2442420A priority Critical patent/GB173267A/en
Publication of GB173267A publication Critical patent/GB173267A/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
GB2442420A 1921-03-12 1921-03-12 Improvements in sound reproducing devices for gramophones and the like Expired GB173267A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2442420A GB173267A (en) 1921-03-12 1921-03-12 Improvements in sound reproducing devices for gramophones and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2442420A GB173267A (en) 1921-03-12 1921-03-12 Improvements in sound reproducing devices for gramophones and the like

Publications (1)

Publication Number Publication Date
GB173267A true GB173267A (en) 1922-01-05

Family

ID=10211506

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2442420A Expired GB173267A (en) 1921-03-12 1921-03-12 Improvements in sound reproducing devices for gramophones and the like

Country Status (1)

Country Link
GB (1) GB173267A (en)

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