US2901889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressurized storage system
Assignee: Phillips Petroleum Co
•
Filing: 1953-04-13
•
Granted: 1959-09-01
•
Expires: 1973-04-13
Abstract
No abstract record available.
Inventors
- 👤 Edwin E Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:46
CPC Classifications
E; E21; E21B; E21B41/00; E21B41/005; E21B41/0057; E21B41/0064; B; B65; B65G; B65G5/00; Y; Y02; Y02C; Y02C20/00; Y02C20/40
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2211845A
Cited
US2230830A
Cited
US2148327A
Cited
US2336977A
Cited
US2398828A
Cited
US2590066A
Cited
US2604049A
Cited
US2545175A
Cited
US2659209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |