BE445780A - - Google Patents
Info
- Publication number
- BE445780A BE445780A BE445780DA BE445780A BE 445780 A BE445780 A BE 445780A BE 445780D A BE445780D A BE 445780DA BE 445780 A BE445780 A BE 445780A
- Authority
- BE
- Belgium
- Prior art keywords
- partition
- partitions
- perforated
- parts
- desc
- Prior art date
Links
- 238000005192 partition Methods 0.000 description 27
- 229920002301 cellulose acetate Polymers 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000000470 constituent Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 235000010980 cellulose Nutrition 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 240000000489 Agave utahensis Species 0.000 description 1
- 241001507939 Cormus domestica Species 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 240000000249 Morus alba Species 0.000 description 1
- 235000008708 Morus alba Nutrition 0.000 description 1
- 102100029469 WD repeat and HMG-box DNA-binding protein 1 Human genes 0.000 description 1
- 101710097421 WD repeat and HMG-box DNA-binding protein 1 Proteins 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 230000001755 vocal effect 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
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/565—Screens allowing free passage of sound
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE445780A true BE445780A (cs) |
Family
ID=102075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE445780D BE445780A (cs) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE445780A (cs) |
-
0
- BE BE445780D patent/BE445780A/fr unknown
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