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FR779255A - Perfectionnements apportés aux moyens pour faire apparaître lumineux dans l'obscurité des signes tels que lettres, chiffres, dessins, etc. - Google Patents

Perfectionnements apportés aux moyens pour faire apparaître lumineux dans l'obscurité des signes tels que lettres, chiffres, dessins, etc.

Info

Publication number
FR779255A
FR779255A FR779255DA FR779255A FR 779255 A FR779255 A FR 779255A FR 779255D A FR779255D A FR 779255DA FR 779255 A FR779255 A FR 779255A
Authority
FR
France
Prior art keywords
letters
dark
numbers
drawings
improvements made
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)
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.)
FR D EN ET DE RADIOCHIMIE SOC
Original Assignee
FR D EN ET DE RADIOCHIMIE SOC
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 FR D EN ET DE RADIOCHIMIE SOC filed Critical FR D EN ET DE RADIOCHIMIE SOC
Application granted granted Critical
Publication of FR779255A publication Critical patent/FR779255A/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
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
FR779255D 1933-10-07 1934-10-06 Perfectionnements apportés aux moyens pour faire apparaître lumineux dans l'obscurité des signes tels que lettres, chiffres, dessins, etc. Expired FR779255A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE779255X 1933-10-07

Publications (1)

Publication Number Publication Date
FR779255A true FR779255A (fr) 1935-04-02

Family

ID=3880371

Family Applications (1)

Application Number Title Priority Date Filing Date
FR779255D Expired FR779255A (fr) 1933-10-07 1934-10-06 Perfectionnements apportés aux moyens pour faire apparaître lumineux dans l'obscurité des signes tels que lettres, chiffres, dessins, etc.

Country Status (1)

Country Link
FR (1) FR779255A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5724910A (en) * 1995-02-28 1998-03-10 Annesley; Robin John Signalling device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5724910A (en) * 1995-02-28 1998-03-10 Annesley; Robin John Signalling device

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