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FR723522A - Spark-producing device for light and sound signs and other applications - Google Patents

Spark-producing device for light and sound signs and other applications

Info

Publication number
FR723522A
FR723522A FR723522DA FR723522A FR 723522 A FR723522 A FR 723522A FR 723522D A FR723522D A FR 723522DA FR 723522 A FR723522 A FR 723522A
Authority
FR
France
Prior art keywords
spark
applications
light
producing device
signs
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
Andre Cremonini
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 filed Critical
Application granted granted Critical
Publication of FR723522A publication Critical patent/FR723522A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
FR723522D 1931-06-11 1931-06-11 Spark-producing device for light and sound signs and other applications Expired FR723522A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR723522T 1931-06-11

Publications (1)

Publication Number Publication Date
FR723522A true FR723522A (en) 1932-04-11

Family

ID=9105191

Family Applications (1)

Application Number Title Priority Date Filing Date
FR723522D Expired FR723522A (en) 1931-06-11 1931-06-11 Spark-producing device for light and sound signs and other applications

Country Status (1)

Country Link
FR (1) FR723522A (en)

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