NL7718C - - Google Patents
Info
- Publication number
- NL7718C NL7718C NL7718DA NL7718C NL 7718 C NL7718 C NL 7718C NL 7718D A NL7718D A NL 7718DA NL 7718 C NL7718 C NL 7718C
- Authority
- NL
- Netherlands
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
- G03B21/62—Translucent screens
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7718C true NL7718C (en) | 1900-01-01 |
Family
ID=1777516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7718D NL7718C (en) |
Country Status (1)
| Country | Link |
|---|---|
| NL (1) | NL7718C (en) |
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0
- NL NL7718D patent/NL7718C/xx active