US2934904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual storage caverns
Assignee: Phillips Petroleum Co
•
Filing: 1955-09-01
•
Granted: 1960-05-03
•
Expires: 1975-09-01
Abstract
No abstract record available.
Inventors
- 👤 Hurshel V Hendrix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:12
CPC Classifications
B; B65; B65G; B65G5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE24318E
Cited
US1784943A
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US2433896A
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US2399994A
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US2459227A
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US2661062A
Cited
US2659209A
Cited
US2788637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |