FR57228E - Pochette pour microfilm - Google Patents
Pochette pour microfilmInfo
- Publication number
- FR57228E FR57228E FR57228DA FR57228E FR 57228 E FR57228 E FR 57228E FR 57228D A FR57228D A FR 57228DA FR 57228 E FR57228 E FR 57228E
- Authority
- FR
- France
- Prior art keywords
- microfilm
- microfilm pocket
- 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.)
- Expired
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
- G03B21/54—Accessories
- G03B21/64—Means for mounting individual pictures to be projected, e.g. frame for transparency
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR57228T | 1947-07-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR57228E true FR57228E (fr) | 1952-12-23 |
Family
ID=8691307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR57228D Expired FR57228E (fr) | 1947-07-21 | 1947-07-21 | Pochette pour microfilm |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR57228E (fr) |
-
1947
- 1947-07-21 FR FR57228D patent/FR57228E/fr not_active Expired
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