FR999368A - - Google Patents

Info

Publication number
FR999368A
FR999368A FR999368DA FR999368A FR 999368 A FR999368 A FR 999368A FR 999368D A FR999368D A FR 999368DA FR 999368 A FR999368 A FR 999368A
Authority
FR
France
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)
Publication date
Application granted granted Critical
Publication of FR999368A publication Critical patent/FR999368A/fr
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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • 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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/06—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using crossed laminae or strips, e.g. grid-shaped louvers; using lattices or honeycombs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR999368D Expired FR999368A (ja)

Publications (1)

Publication Number Publication Date
FR999368A true FR999368A (ja) 1952-01-31

Family

ID=1567305

Family Applications (1)

Application Number Title Priority Date Filing Date
FR999368D Expired FR999368A (ja)

Country Status (1)

Country Link
FR (1) FR999368A (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2710335A (en) * 1952-12-30 1955-06-07 Cepco Inc Light diffusing and sound absorbing unit
US2913576A (en) * 1957-03-18 1959-11-17 Curtis Lighting Inc Louver-diffuser
US3129895A (en) * 1957-08-22 1964-04-21 Holophane Co Inc Shielding prism

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2710335A (en) * 1952-12-30 1955-06-07 Cepco Inc Light diffusing and sound absorbing unit
US2913576A (en) * 1957-03-18 1959-11-17 Curtis Lighting Inc Louver-diffuser
US3129895A (en) * 1957-08-22 1964-04-21 Holophane Co Inc Shielding prism

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