US3461673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lined pit having wind resistant liner therein and method
Assignee: Phillips Petroleum Co
•
Filing: 1967-10-23
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Granted: 1969-08-19
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Expires: 1987-10-23
Abstract
No abstract record available.
Inventors
- 👤 James W Slover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:55
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/04; E02B3/12; E02B3/122; E02B3/126
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE25199E
Cited
US703824A
Cited
US2211958A
Cited
US3075357A
Cited
US3005287A
Cited
US3052380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-18 | 1973-02-17 | 1973-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-18 | 1977-02-17 | 1977-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-18 | 1981-02-17 | 1981-08-19 | $7700.00 | Window Closed / Lapsed |