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FR650884A - Perfectionnement aux lampes de mines - Google Patents

Perfectionnement aux lampes de mines

Info

Publication number
FR650884A
FR650884A FR650884DA FR650884A FR 650884 A FR650884 A FR 650884A FR 650884D A FR650884D A FR 650884DA FR 650884 A FR650884 A FR 650884A
Authority
FR
France
Prior art keywords
development
mining lamps
mining
lamps
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
Edmond Musy
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 filed Critical
Application granted granted Critical
Publication of FR650884A publication Critical patent/FR650884A/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)
FR650884D 1928-03-15 1928-03-15 Perfectionnement aux lampes de mines Expired FR650884A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR650884T 1928-03-15

Publications (1)

Publication Number Publication Date
FR650884A true FR650884A (fr) 1929-02-12

Family

ID=9004232

Family Applications (1)

Application Number Title Priority Date Filing Date
FR650884D Expired FR650884A (fr) 1928-03-15 1928-03-15 Perfectionnement aux lampes de mines

Country Status (1)

Country Link
FR (1) FR650884A (fr)

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