FR720503A - Appareil de projection épiscopique - Google Patents
Appareil de projection épiscopiqueInfo
- Publication number
- FR720503A FR720503A FR720503DA FR720503A FR 720503 A FR720503 A FR 720503A FR 720503D A FR720503D A FR 720503DA FR 720503 A FR720503 A FR 720503A
- Authority
- FR
- France
- Prior art keywords
- projection apparatus
- episcopic projection
- episcopic
- projection
- 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
- G03B21/06—Projectors or projection-type viewers; Accessories therefor affording only episcopic projection
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE720503X | 1930-07-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR720503A true FR720503A (fr) | 1932-02-20 |
Family
ID=6628142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR720503D Expired FR720503A (fr) | 1930-07-23 | 1931-07-22 | Appareil de projection épiscopique |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR720503A (fr) |
-
1931
- 1931-07-22 FR FR720503D patent/FR720503A/fr not_active Expired
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