US3539696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Real-time dynamic perspective display
Assignee: Boeing North American Inc
•
Filing: 1968-04-01
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Granted: 1970-11-10
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Expires: 1988-04-01
Abstract
No abstract record available.
Inventors
- 👤 James S Sweeney
- 👤 Charles P Greening
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:47
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/08; G09B9/30; G09B9/305; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3028684A
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US3113989A
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US3131247A
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US3067525A
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US3067526A
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US3229018A
Cited
US3294891A
Cited
US3439105A
Cited
US3355538A
Cited
US3413402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |