FR1174188A - Lighting improvements - Google Patents

Lighting improvements

Info

Publication number
FR1174188A
FR1174188A FR1174188DA FR1174188A FR 1174188 A FR1174188 A FR 1174188A FR 1174188D A FR1174188D A FR 1174188DA FR 1174188 A FR1174188 A FR 1174188A
Authority
FR
France
Prior art keywords
lighting
lighting improvements
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)
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.)
Holophane Corp
Original Assignee
Holophane Corp
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 Holophane Corp filed Critical Holophane Corp
Application granted granted Critical
Publication of FR1174188A publication Critical patent/FR1174188A/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
FR1174188D 1957-04-12 1957-04-12 Lighting improvements Expired FR1174188A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1174188T 1957-04-12

Publications (1)

Publication Number Publication Date
FR1174188A true FR1174188A (en) 1959-03-06

Family

ID=9658583

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1174188D Expired FR1174188A (en) 1957-04-12 1957-04-12 Lighting improvements

Country Status (1)

Country Link
FR (1) FR1174188A (en)

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