FR724725A - Perfectionnements apportés aux lampes électriques de mines - Google Patents

Perfectionnements apportés aux lampes électriques de mines

Info

Publication number
FR724725A
FR724725A FR724725DA FR724725A FR 724725 A FR724725 A FR 724725A FR 724725D A FR724725D A FR 724725DA FR 724725 A FR724725 A FR 724725A
Authority
FR
France
Prior art keywords
lights
electric mine
mine
electric
mine lights
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
English (en)
Inventor
Jules-Gaston Daloz
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.)
ECLAIRAGE ET D APPLIC ELECTR S
Original Assignee
ECLAIRAGE ET D APPLIC ELECTR S
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 ECLAIRAGE ET D APPLIC ELECTR S filed Critical ECLAIRAGE ET D APPLIC ELECTR S
Application granted granted Critical
Publication of FR724725A publication Critical patent/FR724725A/fr
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00—Electric lighting devices with self-contained electric batteries or cells
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L2/00—Systems of electric lighting devices
    • 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
    • F21V25/00—Safety devices structurally associated with lighting devices
    • F21V25/02—Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR724725D 1930-10-18 1931-10-17 Perfectionnements apportés aux lampes électriques de mines Expired FR724725A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE724725X 1930-10-18

Publications (1)

Publication Number Publication Date
FR724725A true FR724725A (fr) 1932-05-02

Family

ID=1544897

Family Applications (1)

Application Number Title Priority Date Filing Date
FR724725D Expired FR724725A (fr) 1930-10-18 1931-10-17 Perfectionnements apportés aux lampes électriques de mines

Country Status (1)

Country Link
FR (1) FR724725A (fr)

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