US3502103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inlet device for introducing water and oil in a pipeline
Assignee: Shell USA Inc
•
Filing: 1968-02-23
•
Granted: 1970-03-24
•
Expires: 1988-02-23
Abstract
No abstract record available.
Inventors
- 👤 Eke Verschuur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:43
CPC Classifications
F; F15; F15D; F15D1/00; F15D1/02; F15D1/06; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391; Y10T137/4238; Y10T137/8593; Y10T137/85978; Y10T137/86131; Y10T137/86163; Y10T137/87571; Y10T137/87652
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1454485A
Cited
US2337921A
Cited
FR1031248A
Cited
GB930080A
Cited
US3175571A
Cited
US3307567A
Cited
US3414004A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-23 | 1973-09-22 | 1974-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-23 | 1977-09-22 | 1978-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-23 | 1981-09-22 | 1982-03-24 | $7700.00 | Window Closed / Lapsed |