FR620352A - Dispositif de projection applicable aux chemins de fer - Google Patents

Dispositif de projection applicable aux chemins de fer

Info

Publication number
FR620352A
FR620352A FR620352DA FR620352A FR 620352 A FR620352 A FR 620352A FR 620352D A FR620352D A FR 620352DA FR 620352 A FR620352 A FR 620352A
Authority
FR
France
Prior art keywords
railways
projection device
device applicable
applicable
projection
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
English (en)
Inventor
Emile-Christian Penin
Gabrielle Jousset
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 FR620352A publication Critical patent/FR620352A/fr
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)
FR620352D 1925-12-24 1925-12-24 Dispositif de projection applicable aux chemins de fer Expired FR620352A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR620352T 1925-12-24

Publications (1)

Publication Number Publication Date
FR620352A true FR620352A (fr) 1927-04-21

Family

ID=8984347

Family Applications (1)

Application Number Title Priority Date Filing Date
FR620352D Expired FR620352A (fr) 1925-12-24 1925-12-24 Dispositif de projection applicable aux chemins de fer

Country Status (1)

Country Link
FR (1) FR620352A (fr)

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