US3517110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible underwater riser containing electrical conductors and material conduits
Assignee: Boeing North American Inc
•
Filing: 1968-04-01
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Granted: 1970-06-23
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Expires: 1988-04-01
Abstract
No abstract record available.
Inventors
- 👤 George W Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:48
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/04; F16L11/12; F16L11/127; E; E21; E21B; E21B17/00; E21B17/01; E21B17/012; F16L11/22; F16L2101/00; F16L2101/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US989532A
Cited
US2186793A
Cited
US2518454A
Cited
US3017934A
Cited
US3281571A
Cited
US3344888A
Cited
US3375324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |