US2953146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipeline transportation
Assignee: Shell USA Inc
•
Filing: 1957-08-19
•
Granted: 1960-09-20
•
Expires: 1977-08-19
Abstract
No abstract record available.
Inventors
- 👤 Benjamin E Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:56
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; B08B9/053; B08B9/055; B08B9/0555; F; F17; F17D; F17D3/00; F17D3/03; F17D3/05; F16; F16L; F16L2101/00; F16L2101/40; Y; Y10; Y10T; Y10T137/00; Y10T137/0318
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2706254A
Cited
US2694404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |