FR450690A - Projecteur - Google Patents
ProjecteurInfo
- Publication number
- FR450690A FR450690A FR450690A FR450690DA FR450690A FR 450690 A FR450690 A FR 450690A FR 450690 A FR450690 A FR 450690A FR 450690D A FR450690D A FR 450690DA FR 450690 A FR450690 A FR 450690A
- Authority
- FR
- France
- Prior art keywords
- projector
- 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
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
- F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Optical Elements Other Than Lenses (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE191229577X | 1911-12-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR450690A true FR450690A (fr) | 1913-04-01 |
Family
ID=32522821
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR450690A Expired FR450690A (fr) | 1911-12-21 | 1912-11-18 | Projecteur |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR450690A (fr) |
GB (1) | GB191229577A (fr) |
-
1912
- 1912-11-18 FR FR450690A patent/FR450690A/fr not_active Expired
- 1912-12-23 GB GB191229577D patent/GB191229577A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB191229577A (en) | 1913-08-21 |
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