FR325111A - Improvements to phonographs - Google Patents

Improvements to phonographs

Info

Publication number
FR325111A
FR325111A FR325111DA FR325111A FR 325111 A FR325111 A FR 325111A FR 325111D A FR325111D A FR 325111DA FR 325111 A FR325111 A FR 325111A
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)
Inventor
Worthington Marcus Morton
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 FR325111A publication Critical patent/FR325111A/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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR325111D 1902-08-12 1902-08-12 Improvements to phonographs Expired FR325111A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR325111T 1902-08-12

Publications (1)

Publication Number Publication Date
FR325111A true FR325111A (en) 1903-04-18

Family

ID=1375298

Family Applications (1)

Application Number Title Priority Date Filing Date
FR325111D Expired FR325111A (en) 1902-08-12 1902-08-12 Improvements to phonographs

Country Status (1)

Country Link
FR (1) FR325111A (en)

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