FR741772A - - Google Patents
Info
- Publication number
- FR741772A FR741772A FR741772DA FR741772A FR 741772 A FR741772 A FR 741772A FR 741772D A FR741772D A FR 741772DA FR 741772 A FR741772 A FR 741772A
- Authority
- FR
- France
- 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
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
Publications (1)
Publication Number | Publication Date |
---|---|
FR741772A true FR741772A (en) | 1933-02-18 |
Family
ID=1546265
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR741772D Expired FR741772A (en) |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR741772A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2895779A1 (en) * | 2005-12-30 | 2007-07-06 | Obsta Snc | Light signaling device for performing danger marker beacon function, has arc tube with straight sections whose number and orientation are selected such that light beam is directed in all azimuthal directions around azimuthal axis |
-
0
- FR FR741772D patent/FR741772A/fr not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2895779A1 (en) * | 2005-12-30 | 2007-07-06 | Obsta Snc | Light signaling device for performing danger marker beacon function, has arc tube with straight sections whose number and orientation are selected such that light beam is directed in all azimuthal directions around azimuthal axis |
WO2007077364A1 (en) * | 2005-12-30 | 2007-07-12 | Obsta | Luminous signalling device |
US7816843B2 (en) | 2005-12-30 | 2010-10-19 | Obsta | Light signaling device |