US3376708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipeline riser installation
Assignee: ExxonMobil Upstream Research Co
•
Filing: 1966-02-07
•
Granted: 1968-04-09
•
Expires: 1986-02-07
Abstract
No abstract record available.
Inventors
- 👤 Robert G Hindman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:42
CPC Classifications
B; B63; B63B; B63B22/00; B63B22/02; B63B22/021; B63B22/023; F; F16; F16L; F16L1/00; F16L1/12; F16L1/14; F16L1/15; F16L3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE23963E
Cited
US1220188A
Cited
US1664643A
Cited
US3299957A
Cited
US3308881A
Cited
US3258928A
Cited
US3219116A
Cited
US3226728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |