FR1120173A - Improvements to electric lights and similar devices - Google Patents

Improvements to electric lights and similar devices

Info

Publication number
FR1120173A
FR1120173A FR1120173DA FR1120173A FR 1120173 A FR1120173 A FR 1120173A FR 1120173D A FR1120173D A FR 1120173DA FR 1120173 A FR1120173 A FR 1120173A
Authority
FR
France
Prior art keywords
similar devices
electric lights
lights
electric
similar
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
R Locatelli
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.)
Philips Eclairage et Radio SA
Original Assignee
Philips Eclairage et Radio SA
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 Philips Eclairage et Radio SA filed Critical Philips Eclairage et Radio SA
Application granted granted Critical
Publication of FR1120173A publication Critical patent/FR1120173A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/08—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for producing coloured light, e.g. monochromatic; for reducing intensity of light
    • 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
FR1120173D 1955-01-18 1955-01-18 Improvements to electric lights and similar devices Expired FR1120173A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1120173T 1955-01-18

Publications (1)

Publication Number Publication Date
FR1120173A true FR1120173A (en) 1956-07-02

Family

ID=9631345

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1120173D Expired FR1120173A (en) 1955-01-18 1955-01-18 Improvements to electric lights and similar devices

Country Status (1)

Country Link
FR (1) FR1120173A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1203707B (en) * 1959-05-13 1965-10-28 Corning Glass Works Translucent prismatic plate
DE4001839A1 (en) * 1990-01-23 1991-07-25 Adp Automaten Gmbh Suspended lighting unit - has side panels transmitting light and with advertising information

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1203707B (en) * 1959-05-13 1965-10-28 Corning Glass Works Translucent prismatic plate
DE4001839A1 (en) * 1990-01-23 1991-07-25 Adp Automaten Gmbh Suspended lighting unit - has side panels transmitting light and with advertising information

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