BE466684A - - Google Patents
Info
- Publication number
- BE466684A BE466684A BE466684DA BE466684A BE 466684 A BE466684 A BE 466684A BE 466684D A BE466684D A BE 466684DA BE 466684 A BE466684 A BE 466684A
- Authority
- BE
- Belgium
- Prior art keywords
- film
- films
- plate
- reading
- microfilms
- Prior art date
Links
- 239000011521 glass Substances 0.000 description 9
- 238000010276 construction Methods 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 230000003287 optical Effects 0.000 description 1
- 230000036633 rest Effects 0.000 description 1
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
- G03B21/10—Projectors with built-in or built-on screen
- G03B21/11—Projectors with built-in or built-on screen for microfilm reading
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
Publications (1)
Publication Number | Publication Date |
---|---|
BE466684A true BE466684A (el) |
Family
ID=117934
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE466684D BE466684A (el) |
Country Status (1)
Country | Link |
---|---|
BE (1) | BE466684A (el) |
-
0
- BE BE466684D patent/BE466684A/fr unknown
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