BE500497A - - Google Patents
Info
- Publication number
- BE500497A BE500497A BE500497DA BE500497A BE 500497 A BE500497 A BE 500497A BE 500497D A BE500497D A BE 500497DA BE 500497 A BE500497 A BE 500497A
- Authority
- BE
- Belgium
- Prior art keywords
- lamp
- firedamp
- switch
- electric
- indicator
- Prior art date
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 12
- 238000010276 construction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
- F21L27/00—Lighting devices or systems, employing combinations of electric and non-electric light sources; Replacing or exchanging electric light sources with non-electric light sources or vice versa in lighting devices or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
- F21L2/00—Systems of electric lighting devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE500497A true BE500497A (enrdf_load_stackoverflow) |
Family
ID=142585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE500497D BE500497A (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE500497A (enrdf_load_stackoverflow) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1177247B (de) * | 1963-02-26 | 1964-09-03 | Concordia Elek Zitaets Ag | Kopfleuchte, insbesondere fuer Grubenbetriebe |
-
0
- BE BE500497D patent/BE500497A/fr unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1177247B (de) * | 1963-02-26 | 1964-09-03 | Concordia Elek Zitaets Ag | Kopfleuchte, insbesondere fuer Grubenbetriebe |
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