NL6902751A - - Google Patents
Info
- Publication number
- NL6902751A NL6902751A NL6902751A NL6902751A NL6902751A NL 6902751 A NL6902751 A NL 6902751A NL 6902751 A NL6902751 A NL 6902751A NL 6902751 A NL6902751 A NL 6902751A NL 6902751 A NL6902751 A NL 6902751A
- Authority
- NL
- Netherlands
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
- G03B21/132—Overhead projectors, i.e. capable of projecting hand-writing or drawing during action
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S353/00—Optics: image projectors
- Y10S353/06—Head accessories
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
- Lenses (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Projection Apparatus (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US71031768A | 1968-03-04 | 1968-03-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NL6902751A true NL6902751A (cg-RX-API-DMAC10.html) | 1969-09-08 |
| NL142244B NL142244B (nl) | 1974-05-15 |
Family
ID=24853522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL696902751A NL142244B (nl) | 1968-03-04 | 1969-02-21 | Objectief voor een projector. |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US3536391A (cg-RX-API-DMAC10.html) |
| JP (1) | JPS4942925B1 (cg-RX-API-DMAC10.html) |
| AT (1) | AT301210B (cg-RX-API-DMAC10.html) |
| BE (1) | BE729253A (cg-RX-API-DMAC10.html) |
| BR (1) | BR6906808D0 (cg-RX-API-DMAC10.html) |
| CH (1) | CH495562A (cg-RX-API-DMAC10.html) |
| DE (1) | DE1909641A1 (cg-RX-API-DMAC10.html) |
| ES (1) | ES363974A1 (cg-RX-API-DMAC10.html) |
| FR (1) | FR2003151B1 (cg-RX-API-DMAC10.html) |
| GB (1) | GB1258519A (cg-RX-API-DMAC10.html) |
| NL (1) | NL142244B (cg-RX-API-DMAC10.html) |
| SE (1) | SE343402B (cg-RX-API-DMAC10.html) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5227821A (en) * | 1987-04-30 | 1993-07-13 | Nview Corporation | Liquid crystal display for projection systems |
| US5255029A (en) * | 1987-04-30 | 1993-10-19 | Nview Corporation | Liquid crystal display for projection systems |
| US5745292A (en) * | 1992-11-25 | 1998-04-28 | Tenebraex Corporation | Optical devices and reflection control techniques |
| US6582084B2 (en) * | 2001-03-19 | 2003-06-24 | 3M Innovative Properties Company | Projector having an inverted head optical arrangement |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3126786A (en) * | 1964-03-31 | appeldorn | ||
| US703858A (en) * | 1902-03-19 | 1902-07-01 | Auguste Vautier | Photographic camera. |
| US1333033A (en) * | 1919-05-08 | 1920-03-09 | Narodick Martin | Glare-preventing device for headlights |
| US1662693A (en) * | 1925-01-26 | 1928-03-13 | Astafiev Michael | Optical system |
| US1708776A (en) * | 1928-04-14 | 1929-04-09 | Clarence R Polen | Visor attachment for headlights |
| US2034441A (en) * | 1934-05-02 | 1936-03-17 | Folmer Graflex Corp | Art or method of accurately photographing upon film strips having nonsensitized ends |
-
1968
- 1968-03-04 US US710317A patent/US3536391A/en not_active Expired - Lifetime
-
1969
- 1969-02-21 DE DE19691909641 patent/DE1909641A1/de active Pending
- 1969-02-21 SE SE2416/69A patent/SE343402B/xx unknown
- 1969-02-21 NL NL696902751A patent/NL142244B/xx not_active IP Right Cessation
- 1969-02-22 ES ES363974A patent/ES363974A1/es not_active Expired
- 1969-03-03 FR FR696905607A patent/FR2003151B1/fr not_active Expired
- 1969-03-03 JP JP44016089A patent/JPS4942925B1/ja active Pending
- 1969-03-03 GB GB1258519D patent/GB1258519A/en not_active Expired
- 1969-03-03 BR BR206808/69A patent/BR6906808D0/pt unknown
- 1969-03-03 AT AT209169A patent/AT301210B/de not_active IP Right Cessation
- 1969-03-03 CH CH316469A patent/CH495562A/de not_active IP Right Cessation
- 1969-03-03 BE BE729253A patent/BE729253A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| BE729253A (cg-RX-API-DMAC10.html) | 1969-09-03 |
| BR6906808D0 (pt) | 1973-01-11 |
| FR2003151B1 (cg-RX-API-DMAC10.html) | 1974-06-14 |
| NL142244B (nl) | 1974-05-15 |
| ES363974A1 (es) | 1971-01-01 |
| SE343402B (cg-RX-API-DMAC10.html) | 1972-03-06 |
| GB1258519A (cg-RX-API-DMAC10.html) | 1971-12-30 |
| US3536391A (en) | 1970-10-27 |
| FR2003151A1 (cg-RX-API-DMAC10.html) | 1969-11-07 |
| JPS4942925B1 (cg-RX-API-DMAC10.html) | 1974-11-18 |
| AT301210B (de) | 1972-08-25 |
| DE1909641A1 (de) | 1969-10-02 |
| CH495562A (de) | 1970-08-31 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NL80 | Abbreviated name of patent owner mentioned of already nullified patent |
Owner name: MINNESOTA MIN |
|
| V4 | Discontinued because of reaching the maximum lifetime of a patent |