FR331921A - Fermeture de sureté de lampe de mine - Google Patents
Fermeture de sureté de lampe de mineInfo
- Publication number
- FR331921A FR331921A FR331921DA FR331921A FR 331921 A FR331921 A FR 331921A FR 331921D A FR331921D A FR 331921DA FR 331921 A FR331921 A FR 331921A
- Authority
- FR
- France
- Prior art keywords
- safety lock
- mine lamp
- lamp safety
- mine
- lock
- 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
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/30—Inverted burners, e.g. for illumination
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR331921T | 1903-05-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR331921A true FR331921A (fr) | 1903-10-08 |
Family
ID=1381603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR331921D Expired FR331921A (fr) | 1903-05-11 | 1903-05-11 | Fermeture de sureté de lampe de mine |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR331921A (fr) |
-
1903
- 1903-05-11 FR FR331921D patent/FR331921A/fr not_active Expired
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