US3529148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collector and method for producing a nearly uniform distribution of flux density on a target plane perpendicular to the optical axis
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1967-12-13
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Granted: 1970-09-15
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Expires: 1987-12-13
Abstract
No abstract record available.
Inventors
- 👤 Nicholas M Stefano
- 👤 Allan D Le Vantine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:09
CPC Classifications
F; F21; F21V; F21V7/00; F21V7/04; F21S; F21S8/00; F21S8/006; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1421506A
Cited
US2192886A
Cited
US2771001A
Cited
GB832378A
Cited
US3291976A
Cited
US3449561A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |