Patent US3513306A successfully refreshed from Google Patents.
US3513306A
Expired / Lapsed
US
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Multimodular collimated light projection system
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1967-07-24
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Granted: 1970-05-19
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Expires: 1987-07-24
Abstract
No abstract record available.
Inventors
- 👤 Allan D Le Vantine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:27
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB653914A
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US2877342A
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US3187339A
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US3296432A
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US3144806A
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US3225188A
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US3296923A
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US3356002A
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US3379067A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-18 | 1973-11-17 | 1974-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-18 | 1977-11-17 | 1978-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-18 | 1981-11-17 | 1982-05-19 | $7700.00 | Window Closed / Lapsed |