FR510470A - Perfectionnements aux lampes de sureté - Google Patents

Perfectionnements aux lampes de sureté

Info

Publication number
FR510470A
FR510470A FR510470A FR510470DA FR510470A FR 510470 A FR510470 A FR 510470A FR 510470 A FR510470 A FR 510470A FR 510470D A FR510470D A FR 510470DA FR 510470 A FR510470 A FR 510470A
Authority
FR
France
Prior art keywords
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
FR510470A
Other languages
English (en)
Inventor
Emile-Alexandre Cotte
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.)
EMILE-ALEXANDRE COTTE
Original Assignee
EMILE-ALEXANDRE COTTE
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 EMILE-ALEXANDRE COTTE filed Critical EMILE-ALEXANDRE COTTE
Application granted granted Critical
Publication of FR510470A publication Critical patent/FR510470A/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
    • F21L23/00—Non-electric hand-lamps for miners

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR510470A 1919-05-27 1919-05-27 Perfectionnements aux lampes de sureté Expired FR510470A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR510470T 1919-05-27

Publications (1)

Publication Number Publication Date
FR510470A true FR510470A (fr) 1920-12-06

Family

ID=8911821

Family Applications (1)

Application Number Title Priority Date Filing Date
FR510470A Expired FR510470A (fr) 1919-05-27 1919-05-27 Perfectionnements aux lampes de sureté

Country Status (1)

Country Link
FR (1) FR510470A (fr)

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