FR420506A - Fermeture de lampes de sureté - Google Patents

Fermeture de lampes de sureté

Info

Publication number: FR420506A
Authority: FR; France
Prior art keywords: closing; safety lamps; lamps; safety
Prior art date: 1910-09-16
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

Inventor

Ludwig Kesseler

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.)

LUDWIG KESSELER

Original Assignee

LUDWIG KESSELER

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.)

1910-09-16

Filing date

1910-09-16

Publication date

1911-02-01

1910-09-16 Application filed by LUDWIG KESSELER filed Critical LUDWIG KESSELER

1911-02-01 Application granted granted Critical

1911-02-01 Publication of FR420506A publication Critical patent/FR420506A/fr

Status Expired legal-status Critical Current

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)

FR420506D 1910-09-16 1910-09-16 Fermeture de lampes de sureté Expired FR420506A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR420506T		1910-09-16

Publications (1)

Publication Number	Publication Date
FR420506A true FR420506A (fr)	1911-02-01

Family

ID=1463641

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR420506D Expired FR420506A (fr)	1910-09-16	1910-09-16	Fermeture de lampes de sureté

Country Status (1)

Country	Link
FR (1)	FR420506A (fr)

1910
- 1910-09-16 FR FR420506D patent/FR420506A/fr not_active Expired

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