US3671105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light regulator
Assignee: National Aeronautics and Space Administration
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Filing: 1971-04-28
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Granted: 1972-06-20
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Expires: 1991-04-28
Abstract
Abstract A THIN ABSORBING METALLIC FILM DEPOSITED ON A LOW-MODULUS TRANSPARENT SUBSTRATE AND A MECHANISM FOR STRETCHING THE SUBSTRATE. AS THE SUSTRATE IS STRETCHED, THE THICKNESS OF THE THIN FILM DECREASES AND MICROFRACTURES OCCUR THEREBY ALLOWING AN INCREASE TRANSMISSION OF THE VISIBLE LIGHT THROUGH THE THIN FILM.
Inventors
- 👤 Jerry G Williams
- 👤 Joseph H Judd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:32
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/205
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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |