FR680269A - Process for operating incandescent miner's lamps by gas - Google Patents

Process for operating incandescent miner's lamps by gas

Info

Publication number
FR680269A
FR680269A FR680269DA FR680269A FR 680269 A FR680269 A FR 680269A FR 680269D A FR680269D A FR 680269DA FR 680269 A FR680269 A FR 680269A
Authority
FR
France
Prior art keywords
miner
lamps
gas
operating incandescent
incandescent
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.)
CEAG Concordia Elekrizitats AG
Original Assignee
CEAG Concordia Elekrizitats AG
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 CEAG Concordia Elekrizitats AG filed Critical CEAG Concordia Elekrizitats AG
Application granted granted Critical
Publication of FR680269A publication Critical patent/FR680269A/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)
FR680269D 1928-09-03 1929-08-13 Process for operating incandescent miner's lamps by gas Expired FR680269A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE680269X 1928-09-03

Publications (1)

Publication Number Publication Date
FR680269A true FR680269A (en) 1930-04-28

Family

ID=6594999

Family Applications (1)

Application Number Title Priority Date Filing Date
FR680269D Expired FR680269A (en) 1928-09-03 1929-08-13 Process for operating incandescent miner's lamps by gas

Country Status (1)

Country Link
FR (1) FR680269A (en)

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