FR2272412B3 - - Google Patents
Info
- Publication number
- FR2272412B3 FR2272412B3 FR7516159A FR7516159A FR2272412B3 FR 2272412 B3 FR2272412 B3 FR 2272412B3 FR 7516159 A FR7516159 A FR 7516159A FR 7516159 A FR7516159 A FR 7516159A FR 2272412 B3 FR2272412 B3 FR 2272412B3
- Authority
- FR
- France
- 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
- G03B21/10—Projectors with built-in or built-on screen
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE7418110 | 1974-05-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2272412A1 FR2272412A1 (https=) | 1975-12-19 |
| FR2272412B3 true FR2272412B3 (https=) | 1978-12-01 |
Family
ID=6645139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7516159A Expired FR2272412B3 (https=) | 1974-05-24 | 1975-05-23 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3985430A (https=) |
| FR (1) | FR2272412B3 (https=) |
| IT (1) | IT1033884B (https=) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2640227C3 (de) * | 1976-09-07 | 1980-03-20 | Rolf 7050 Waiblingen Dieckhoff | Vorführgerät, insbesondere audiovisuelles Informationsgerät |
| US4174889A (en) * | 1977-10-31 | 1979-11-20 | Northern Engraving Company | Travel monitor |
| US4217039A (en) * | 1978-10-16 | 1980-08-12 | Bell & Howell Company | Microfiche viewer with rotatable base |
| US4573748A (en) * | 1983-08-08 | 1986-03-04 | Giuseppe Biraghi | Container for a rotating transparency projector fixable at a selected height on a vertical guide |
| TWI312439B (en) * | 2006-06-06 | 2009-07-21 | Coretronic Corporatio | Projection apparatus |
| JP5040180B2 (ja) | 2006-06-08 | 2012-10-03 | 株式会社日立製作所 | 投射型画像表示装置 |
| US20240369205A1 (en) * | 2021-05-01 | 2024-11-07 | April Mitchell | Illuminating device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2592444A (en) * | 1950-04-12 | 1952-04-08 | John J Matelena | Inflatable aerial projection display device |
| US3472588A (en) * | 1966-08-02 | 1969-10-14 | Lester A Dine | Lectern-projector combination |
| US3586432A (en) * | 1969-04-01 | 1971-06-22 | Pentes Design Inc | Self-contained image projecting apparatus and rear projection screen therefor |
| US3848980A (en) * | 1971-08-24 | 1974-11-19 | Polaroid Corp | Projector apparatus and system employing unique screen |
-
1975
- 1975-05-15 US US05/577,756 patent/US3985430A/en not_active Expired - Lifetime
- 1975-05-20 IT IT12613/75A patent/IT1033884B/it active
- 1975-05-23 FR FR7516159A patent/FR2272412B3/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| IT1033884B (it) | 1979-08-10 |
| FR2272412A1 (https=) | 1975-12-19 |
| US3985430A (en) | 1976-10-12 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |