FR522987A - Phonographe à inscription lumineuse - Google Patents

Phonographe à inscription lumineuse

Info

Publication number
FR522987A
FR522987A FR522987A FR522987DA FR522987A FR 522987 A FR522987 A FR 522987A FR 522987 A FR522987 A FR 522987A FR 522987D A FR522987D A FR 522987DA FR 522987 A FR522987 A FR 522987A
Authority
FR
France
Prior art keywords
phonograph
inscription
luminous
luminous inscription
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
FR522987A
Other languages
English (en)
Inventor
Pierre-Marie-Gabriel Toulon
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 FR522987A publication Critical patent/FR522987A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
FR522987A 1919-06-06 1919-06-06 Phonographe à inscription lumineuse Expired FR522987A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR522987T 1919-06-06

Publications (1)

Publication Number Publication Date
FR522987A true FR522987A (fr) 1921-08-09

Family

ID=8918290

Family Applications (1)

Application Number Title Priority Date Filing Date
FR522987A Expired FR522987A (fr) 1919-06-06 1919-06-06 Phonographe à inscription lumineuse

Country Status (1)

Country Link
FR (1) FR522987A (fr)

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