ZA724493B - Device for secretly observing visual intelligence - Google Patents
Device for secretly observing visual intelligenceInfo
- Publication number
- ZA724493B ZA724493B ZA724493A ZA724493A ZA724493B ZA 724493 B ZA724493 B ZA 724493B ZA 724493 A ZA724493 A ZA 724493A ZA 724493 A ZA724493 A ZA 724493A ZA 724493 B ZA724493 B ZA 724493B
- Authority
- ZA
- South Africa
- Prior art keywords
- secretly
- observing visual
- visual intelligence
- intelligence
- observing
- Prior art date
Links
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)
- Credit Cards Or The Like (AREA)
- Laminated Bodies (AREA)
- Absorbent Articles And Supports Therefor (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 |
---|---|
ZA724493B true ZA724493B (en) | 1973-03-28 |
Family
ID=22717545
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA724493A ZA724493B (en) | 1971-11-01 | 1972-06-30 | Device for secretly observing visual intelligence |
Country Status (8)
Country | Link |
---|---|
US (1) | US3750316A (xx) |
AU (1) | AU4419872A (xx) |
CA (1) | CA963255A (xx) |
DE (1) | DE2233961A1 (xx) |
FR (1) | FR2159869A5 (xx) |
GB (1) | GB1380357A (xx) |
SE (1) | SE388784B (xx) |
ZA (1) | ZA724493B (xx) |
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/xx 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 |
---|---|
CA963255A (en) | 1975-02-25 |
DE2233961A1 (de) | 1973-05-24 |
AU4419872A (en) | 1974-01-10 |
GB1380357A (en) | 1975-01-15 |
US3750316A (en) | 1973-08-07 |
FR2159869A5 (xx) | 1973-06-22 |
SE388784B (sv) | 1976-10-18 |
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