GB302216A - Improvements in sound-reproducing instruments - Google Patents

Improvements in sound-reproducing instruments

Info

Publication number
GB302216A
GB302216A GB2407028A GB2407028A GB302216A GB 302216 A GB302216 A GB 302216A GB 2407028 A GB2407028 A GB 2407028A GB 2407028 A GB2407028 A GB 2407028A GB 302216 A GB302216 A GB 302216A
Authority
GB
United Kingdom
Prior art keywords
sound
reproducing instruments
reproducing
instruments
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
GB2407028A
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.)
COLUMBIA GRAPHOPHONE CO Ltd
Original Assignee
COLUMBIA GRAPHOPHONE CO 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 COLUMBIA GRAPHOPHONE CO Ltd filed Critical COLUMBIA GRAPHOPHONE CO Ltd
Priority to GB2407028A priority Critical patent/GB302216A/en
Priority claimed from GB18410/27A external-priority patent/GB302190A/en
Publication of GB302216A publication Critical patent/GB302216A/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
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
GB2407028A 1927-07-11 1927-07-11 Improvements in sound-reproducing instruments Expired GB302216A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2407028A GB302216A (en) 1927-07-11 1927-07-11 Improvements in sound-reproducing instruments

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2407028A GB302216A (en) 1927-07-11 1927-07-11 Improvements in sound-reproducing instruments
GB18410/27A GB302190A (en) 1927-07-11 1927-07-11 Improvements in sound-reproducing instruments

Publications (1)

Publication Number Publication Date
GB302216A true GB302216A (en) 1928-12-11

Family

ID=26253368

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2407028A Expired GB302216A (en) 1927-07-11 1927-07-11 Improvements in sound-reproducing instruments

Country Status (1)

Country Link
GB (1) GB302216A (en)

Similar Documents

Publication Publication Date Title
GB302216A (en) Improvements in sound-reproducing instruments
GB283759A (en) Improvements in devices for teaching reading
CA273986A (en) Guitar playing device
CA273795A (en) Meter reading apparatus
CA273242A (en) Drawing instrument
AU645427A (en) Improvements in aluminium-alloys
AU453826A (en) Improvements in insectifuges
AU1090427A (en) Improvements in chairbacks
AU982427A (en) Improvements in watchcases
CA269047A (en) Measuring instrument
CA273898A (en) Card record
CA269984A (en) Meter
CA272128A (en) Token holder
CA267841A (en) Piano
CA269759A (en) Piano
CA274615A (en) Scale
CA274612A (en) Scale
CA268266A (en) Scale
CA274616A (en) Scale
CA271202A (en) Scale
CA274296A (en) Scale
CA274614A (en) Scale
CA271809A (en) Scale
CA268875A (en) Scale
CA270484A (en) Scale