FR1469884A - Device used to project a text - Google Patents

Device used to project a text

Info

Publication number
FR1469884A
FR1469884A FR50744A FR50744A FR1469884A FR 1469884 A FR1469884 A FR 1469884A FR 50744 A FR50744 A FR 50744A FR 50744 A FR50744 A FR 50744A FR 1469884 A FR1469884 A FR 1469884A
Authority
FR
France
Prior art keywords
project
text
device used
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
FR50744A
Other languages
French (fr)
Inventor
Donald Godfrey Gumpertz
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
Priority to FR50744A priority Critical patent/FR1469884A/en
Application granted granted Critical
Publication of FR1469884A publication Critical patent/FR1469884A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/307—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being incandescent filaments

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
FR50744A 1966-02-23 1966-02-23 Device used to project a text Expired FR1469884A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR50744A FR1469884A (en) 1966-02-23 1966-02-23 Device used to project a text

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR50744A FR1469884A (en) 1966-02-23 1966-02-23 Device used to project a text

Publications (1)

Publication Number Publication Date
FR1469884A true FR1469884A (en) 1967-02-17

Family

ID=8602067

Family Applications (1)

Application Number Title Priority Date Filing Date
FR50744A Expired FR1469884A (en) 1966-02-23 1966-02-23 Device used to project a text

Country Status (1)

Country Link
FR (1) FR1469884A (en)

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