BE727093A - - Google Patents
Info
- Publication number
- BE727093A BE727093A BE727093DA BE727093A BE 727093 A BE727093 A BE 727093A BE 727093D A BE727093D A BE 727093DA BE 727093 A BE727093 A BE 727093A
- Authority
- BE
- Belgium
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
- G03B21/11—Projectors with built-in or built-on screen for microfilm reading
-
- 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
- G03B21/11—Projectors with built-in or built-on screen for microfilm reading
- G03B21/111—Projectors with built-in or built-on screen for microfilm reading of roll films
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
- Overhead Projectors And Projection Screens (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US483950A US3381574A (en) | 1965-08-31 | 1965-08-31 | Apparatus for displaying a projected microfilm image of a drawing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE727093A true BE727093A (pt-PT) | 1969-07-01 |
Family
ID=23922149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE727093D BE727093A (pt-PT) | 1965-08-31 | 1969-01-20 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3381574A (pt-PT) |
| BE (1) | BE727093A (pt-PT) |
| GB (1) | GB1130781A (pt-PT) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3507571A (en) * | 1967-04-03 | 1970-04-21 | Walter F White | Audio-visual apparatus |
| US3741624A (en) * | 1971-08-04 | 1973-06-26 | C Kuntz | Projector device for drawing |
| US4136938A (en) * | 1977-08-16 | 1979-01-30 | Mcgraw-Hill, Inc. | Optical projection apparatus |
| US4842402A (en) * | 1986-04-30 | 1989-06-27 | Mcgraw-Hill, Inc. | Projection and viewing apparatus |
| US4991956A (en) * | 1989-03-02 | 1991-02-12 | Griffin Stephen L | Apparatus for facilitating correlation with a transparency image |
| US5302790A (en) * | 1992-03-16 | 1994-04-12 | Golden Valley Microwave Foods Inc. | Microwave popcorn popping bag |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2265992A (en) * | 1938-11-02 | 1941-12-16 | Morris B Beck | Projector |
| US2281988A (en) * | 1940-05-21 | 1942-05-05 | Spencer Lens Co | Ventilating device for projection apparatus |
| US2543561A (en) * | 1949-01-27 | 1951-02-27 | Tracy Madison Harold | Method of and apparatus for displaying a projected image of a drawing |
| US2659267A (en) * | 1950-10-07 | 1953-11-17 | Hall & Mcchesney Inc | Roll film viewer |
| US3169442A (en) * | 1962-06-21 | 1965-02-16 | Hoppmann Corp | Apparatus for plural image projection |
| US3225650A (en) * | 1963-06-07 | 1965-12-28 | Wright Arthur Reginald | Apparatus for screening films, slides and the like in adverse light conditions |
| US3269264A (en) * | 1964-05-28 | 1966-08-30 | United States Steel Corp | Apparatus for exhibiting couplingthread contour |
-
1965
- 1965-08-31 US US483950A patent/US3381574A/en not_active Expired - Lifetime
-
1966
- 1966-05-26 GB GB23733/66A patent/GB1130781A/en not_active Expired
-
1969
- 1969-01-20 BE BE727093D patent/BE727093A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1130781A (en) | 1968-10-16 |
| US3381574A (en) | 1968-05-07 |