CH561434A5 - - Google Patents
Info
- Publication number
- CH561434A5 CH561434A5 CH579474A CH579474A CH561434A5 CH 561434 A5 CH561434 A5 CH 561434A5 CH 579474 A CH579474 A CH 579474A CH 579474 A CH579474 A CH 579474A CH 561434 A5 CH561434 A5 CH 561434A5
- Authority
- CH
- Switzerland
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)
- Overhead Projectors And Projection Screens (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2332662A DE2332662A1 (de) | 1973-06-23 | 1973-06-23 | Tageslicht-projektionsgeraet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH561434A5 true CH561434A5 (fi) | 1975-04-30 |
Family
ID=5885227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH579474A CH561434A5 (fi) | 1973-06-23 | 1974-04-26 |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE814263A (fi) |
| CH (1) | CH561434A5 (fi) |
| DE (1) | DE2332662A1 (fi) |
| DK (1) | DK333574A (fi) |
| FR (1) | FR2234827A5 (fi) |
| GB (1) | GB1424298A (fi) |
| NO (1) | NO741870L (fi) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9311880U1 (de) * | 1993-08-04 | 1993-10-14 | AV-Kommunikation Anders + Kern GmbH & Co KG, 22851 Norderstedt | Overhead-Projektor mit einem Variofocalobjektiv |
| DE19538795C2 (de) * | 1995-10-18 | 1997-11-27 | Peter Ochsenmeier | Durchlicht-Overheadprojektor |
-
1973
- 1973-06-23 DE DE2332662A patent/DE2332662A1/de active Pending
- 1973-12-14 FR FR7344733A patent/FR2234827A5/fr not_active Expired
-
1974
- 1974-04-26 BE BE143683A patent/BE814263A/xx unknown
- 1974-04-26 CH CH579474A patent/CH561434A5/xx not_active IP Right Cessation
- 1974-05-14 GB GB2125974A patent/GB1424298A/en not_active Expired
- 1974-05-22 NO NO741870A patent/NO741870L/no unknown
- 1974-06-21 DK DK333574A patent/DK333574A/da unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NO741870L (fi) | 1975-01-20 |
| DK333574A (fi) | 1975-02-10 |
| BE814263A (fr) | 1974-08-16 |
| GB1424298A (en) | 1976-02-11 |
| DE2332662A1 (de) | 1975-03-20 |
| FR2234827A5 (fi) | 1975-01-17 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |