BE738652A - - Google Patents
Info
- Publication number
- BE738652A BE738652A BE738652DA BE738652A BE 738652 A BE738652 A BE 738652A BE 738652D A BE738652D A BE 738652DA BE 738652 A BE738652 A BE 738652A
- Authority
- BE
- Belgium
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
- G03B23/00—Devices for changing pictures in viewing apparatus or projectors
- G03B23/18—Devices for changing pictures in viewing apparatus or projectors with fade-in and fade-out effects
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR6912556A FR2041898A5 (fi) | 1969-04-22 | 1969-04-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE738652A true BE738652A (fi) | 1970-02-16 |
Family
ID=9032820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE738652D BE738652A (fi) | 1969-04-22 | 1969-09-10 |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE738652A (fi) |
| CH (1) | CH498416A (fi) |
| DE (1) | DE1954945A1 (fi) |
| FR (1) | FR2041898A5 (fi) |
| NL (1) | NL6916364A (fi) |
-
1969
- 1969-04-22 FR FR6912556A patent/FR2041898A5/fr not_active Expired
- 1969-09-10 CH CH1364569A patent/CH498416A/fr unknown
- 1969-09-10 BE BE738652D patent/BE738652A/xx unknown
- 1969-10-30 NL NL6916364A patent/NL6916364A/xx unknown
- 1969-10-31 DE DE19691954945 patent/DE1954945A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1954945A1 (de) | 1970-11-26 |
| FR2041898A5 (fi) | 1971-02-05 |
| NL6916364A (fi) | 1970-10-26 |
| CH498416A (fr) | 1970-10-31 |