FR694008A - Projected signaling device - Google Patents

Projected signaling device

Info

Publication number
FR694008A
FR694008A FR694008DA FR694008A FR 694008 A FR694008 A FR 694008A FR 694008D A FR694008D A FR 694008DA FR 694008 A FR694008 A FR 694008A
Authority
FR
France
Prior art keywords
projected
signaling device
signaling
projected signaling
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
Louis Ayroldi
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 FR694008A publication Critical patent/FR694008A/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
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
    • G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds

Landscapes

  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
FR694008D 1930-04-16 1930-04-16 Projected signaling device Expired FR694008A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR694008T 1930-04-16

Publications (1)

Publication Number Publication Date
FR694008A true FR694008A (en) 1930-11-27

Family

ID=9043409

Family Applications (1)

Application Number Title Priority Date Filing Date
FR694008D Expired FR694008A (en) 1930-04-16 1930-04-16 Projected signaling device

Country Status (1)

Country Link
FR (1) FR694008A (en)

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