SE388784B - Anordning for maskerad observation av visuell information - Google Patents
Anordning for maskerad observation av visuell informationInfo
- Publication number
- SE388784B SE388784B SE7208845A SE884572A SE388784B SE 388784 B SE388784 B SE 388784B SE 7208845 A SE7208845 A SE 7208845A SE 884572 A SE884572 A SE 884572A SE 388784 B SE388784 B SE 388784B
- Authority
- SE
- Sweden
- Prior art keywords
- masked
- observation
- visual information
- visual
- information
- Prior art date
Links
- 230000000007 visual effect Effects 0.000 title 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Laminated Bodies (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Credit Cards Or The Like (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US19442271A | 1971-11-01 | 1971-11-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE388784B true SE388784B (sv) | 1976-10-18 |
Family
ID=22717545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7208845A SE388784B (sv) | 1971-11-01 | 1972-07-05 | Anordning for maskerad observation av visuell information |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3750316A (sv) |
| AU (1) | AU4419872A (sv) |
| CA (1) | CA963255A (sv) |
| DE (1) | DE2233961A1 (sv) |
| FR (1) | FR2159869A5 (sv) |
| GB (1) | GB1380357A (sv) |
| SE (1) | SE388784B (sv) |
| ZA (1) | ZA724493B (sv) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3878631A (en) * | 1972-03-03 | 1975-04-22 | Wurlitzer Co | Program holder for a juke box or the like |
| US4025673A (en) * | 1972-04-13 | 1977-05-24 | Reinnagel Richard E | Method of forming copy resistant documents by forming an orderly array of fibers extending upward from a surface, coating the fibers and printing the coated fibers and the copy resistant document resulting from said method |
-
1971
- 1971-11-01 US US00194422A patent/US3750316A/en not_active Expired - Lifetime
-
1972
- 1972-06-30 ZA ZA724493A patent/ZA724493B/xx unknown
- 1972-06-30 CA CA146,177A patent/CA963255A/en not_active Expired
- 1972-07-04 AU AU44198/72A patent/AU4419872A/en not_active Expired
- 1972-07-05 SE SE7208845A patent/SE388784B/sv unknown
- 1972-07-11 DE DE2233961A patent/DE2233961A1/de active Pending
- 1972-07-12 GB GB3252472A patent/GB1380357A/en not_active Expired
- 1972-07-13 FR FR7225624A patent/FR2159869A5/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3750316A (en) | 1973-08-07 |
| GB1380357A (en) | 1975-01-15 |
| ZA724493B (en) | 1973-03-28 |
| CA963255A (en) | 1975-02-25 |
| AU4419872A (en) | 1974-01-10 |
| FR2159869A5 (sv) | 1973-06-22 |
| DE2233961A1 (de) | 1973-05-24 |
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