DE235639C - - Google Patents
Info
- Publication number
- DE235639C DE235639C DENDAT235639D DE235639DA DE235639C DE 235639 C DE235639 C DE 235639C DE NDAT235639 D DENDAT235639 D DE NDAT235639D DE 235639D A DE235639D A DE 235639DA DE 235639 C DE235639 C DE 235639C
- Authority
- DE
- Germany
- Prior art keywords
- format
- lever system
- image
- portrait
- lever
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000005484 gravity Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 description 2
- 230000007704 transition 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
- G03B21/64—Means for mounting individual pictures to be projected, e.g. frame for transparency
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE235639C true DE235639C (enExample) |
Family
ID=495393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT235639D Active DE235639C (enExample) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE235639C (enExample) |
-
0
- DE DENDAT235639D patent/DE235639C/de active Active
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