FR594649A - Improvements to phonographs - Google Patents

Improvements to phonographs

Info

Publication number
FR594649A
FR594649A FR594649DA FR594649A FR 594649 A FR594649 A FR 594649A FR 594649D A FR594649D A FR 594649DA FR 594649 A FR594649 A FR 594649A
Authority
FR
France
Prior art keywords
phonographs
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
Other languages
French (fr)
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.)
Parlophone Records Ltd
Original Assignee
Gramophone 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 Gramophone Co Ltd filed Critical Gramophone Co Ltd
Application granted granted Critical
Publication of FR594649A publication Critical patent/FR594649A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/44—Styli, e.g. sapphire, diamond
    • G11B3/46—Constructions or forms ; Dispositions or mountings, e.g. attachment of point to shank
    • 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
    • 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
    • H04R7/12—Non-planar diaphragms or cones

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Reciprocating Pumps (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Toys (AREA)
FR594649D 1924-05-26 1925-03-06 Improvements to phonographs Expired FR594649A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB594649X 1924-05-26

Publications (1)

Publication Number Publication Date
FR594649A true FR594649A (en) 1925-09-16

Family

ID=10483813

Family Applications (2)

Application Number Title Priority Date Filing Date
FR594650D Expired FR594650A (en) 1924-05-26 1925-03-06 Improvements to phonographs
FR594649D Expired FR594649A (en) 1924-05-26 1925-03-06 Improvements to phonographs

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR594650D Expired FR594650A (en) 1924-05-26 1925-03-06 Improvements to phonographs

Country Status (3)

Country Link
CH (2) CH113772A (en)
DE (2) DE435324C (en)
FR (2) FR594650A (en)

Also Published As

Publication number Publication date
CH113772A (en) 1926-02-16
CH114317A (en) 1926-04-01
DE474449C (en) 1929-04-03
DE435324C (en) 1926-10-09
FR594650A (en) 1925-09-16

Similar Documents

Publication Publication Date Title
FR591988A (en) Improvements to hyudofoils
FR31860E (en) Improvements to phonographs
FR613310A (en) Improvements to carriers
FR599782A (en) Improvements to odometers
FR590147A (en) Improvements to pacifiers
FR594649A (en) Improvements to phonographs
FR578701A (en) Improvements to phonographs
FR594213A (en) Improvements to phonographs
FR593803A (en) Improvements to phonographs
FR588828A (en) Improvements made to cases
FR595249A (en) Improvements to triggers
FR577855A (en) Improvements to projectors
FR603261A (en) Improvements to phonographs
FR614897A (en) Improvements to phonographs
FR604828A (en) Improvements to phonographs
FR591400A (en) Improvements to phonographs
FR597358A (en) Improvements to haveuses
FR603120A (en) Improvements to mower-harvesters
FR595671A (en) Improvements to gazcgènes
FR595342A (en) Improvements to auto-compressors
FR580064A (en) Improvements to negatoscopes
FR577956A (en) Improvements to cinematographs
FR581611A (en) Improvements to phonograph records
FR615606A (en) Improvements to gramophones
FR587353A (en) Improvements made to cremones