FR1099072A - Improvements to lamps for underwater observation and photography - Google Patents

Improvements to lamps for underwater observation and photography

Info

Publication number
FR1099072A
FR1099072A FR1099072DA FR1099072A FR 1099072 A FR1099072 A FR 1099072A FR 1099072D A FR1099072D A FR 1099072DA FR 1099072 A FR1099072 A FR 1099072A
Authority
FR
France
Prior art keywords
photography
lamps
underwater observation
underwater
observation
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
Jean Brouardel
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.)
Centre National de la Recherche Scientifique CNRS
Original Assignee
Centre National de la Recherche Scientifique CNRS
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 Centre National de la Recherche Scientifique CNRS filed Critical Centre National de la Recherche Scientifique CNRS
Application granted granted Critical
Publication of FR1099072A publication Critical patent/FR1099072A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/42—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp
    • H01K1/46—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp supported by a separate part, e.g. base, cap
FR1099072D 1954-02-05 1954-02-05 Improvements to lamps for underwater observation and photography Expired FR1099072A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1099072T 1954-02-05

Publications (1)

Publication Number Publication Date
FR1099072A true FR1099072A (en) 1955-08-30

Family

ID=9619552

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1099072D Expired FR1099072A (en) 1954-02-05 1954-02-05 Improvements to lamps for underwater observation and photography

Country Status (1)

Country Link
FR (1) FR1099072A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0441439A1 (en) * 1990-02-08 1991-08-14 Koninklijke Philips Electronics N.V. Electric lamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0441439A1 (en) * 1990-02-08 1991-08-14 Koninklijke Philips Electronics N.V. Electric lamp

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