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FR533462A - Improvements to closures for safety lamps - Google Patents

Improvements to closures for safety lamps

Info

Publication number
FR533462A
FR533462A FR533462DA FR533462A FR 533462 A FR533462 A FR 533462A FR 533462D A FR533462D A FR 533462DA FR 533462 A FR533462 A FR 533462A
Authority
FR
France
Prior art keywords
closures
safety lamps
lamps
safety
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.)
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 FR533462A publication Critical patent/FR533462A/en
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
    • F21L23/00—Non-electric hand-lamps for miners

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR533462D 1919-12-30 1919-12-30 Improvements to closures for safety lamps Expired FR533462A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR533462T 1919-12-30

Publications (1)

Publication Number Publication Date
FR533462A true FR533462A (en) 1922-03-03

Family

ID=8924937

Family Applications (1)

Application Number Title Priority Date Filing Date
FR533462D Expired FR533462A (en) 1919-12-30 1919-12-30 Improvements to closures for safety lamps

Country Status (1)

Country Link
FR (1) FR533462A (en)

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