Patent US3587424A successfully refreshed from Google Patents.
US3587424A
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Laser camera and diffusion filter therefor
Assignee: National Aeronautics and Space Administration
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Filing: 1968-08-20
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Granted: 1971-06-28
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Expires: 1988-08-20
Abstract
Abstract A LASER CAMERA SYSTEM INCLUDING A DIFFUSION FILTER IS DISCLOSED. THE DIFFUSION FILTER IS A LASER LIGHT TRANSPARENT RECEPTACLE CONTAINING A SUSPENSION OF SMALL PARTICLES HAVING AN AVERAGE DIAMETER LARGER THAN THE WAVELENGTH OF THE LASER LIGHT. THE SUSPENSION IS PREFERABLY A COLLOIDAL SUSPENSION OF MILK OR METAL PARTICLES IN WATER.
Inventors
- 👤 Mark J Olsasky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:23
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/10; H01S3/11; H01S3/1123; H01S3/115; G; G03; G03B; G03B17/00; G03B17/02; G03B17/12; G03B9/00; G03B9/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |