NL7203289A - - Google Patents
Info
- Publication number
- NL7203289A NL7203289A NL7203289A NL7203289A NL7203289A NL 7203289 A NL7203289 A NL 7203289A NL 7203289 A NL7203289 A NL 7203289A NL 7203289 A NL7203289 A NL 7203289A NL 7203289 A NL7203289 A NL 7203289A
- 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
- G03B21/132—Overhead projectors, i.e. capable of projecting hand-writing or drawing during action
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7203289A NL7203289A (en) | 1972-03-13 | 1972-03-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7203289A NL7203289A (en) | 1972-03-13 | 1972-03-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7203289A true NL7203289A (en) | 1973-09-17 |
Family
ID=19815581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7203289A NL7203289A (en) | 1972-03-13 | 1972-03-13 |
Country Status (1)
| Country | Link |
|---|---|
| NL (1) | NL7203289A (en) |
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1972
- 1972-03-13 NL NL7203289A patent/NL7203289A/xx unknown