Patent US2879646A successfully refreshed from Google Patents.
US2879646A
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US
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Underground storage of liquids
Assignee: Phillips Petroleum Co
•
Filing: 1954-02-15
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Granted: 1959-03-31
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Expires: 1974-02-15
Abstract
No abstract record available.
Inventors
- 👤 Carl T Brandt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:41
CPC Classifications
B; B65; B65G; B65G5/00; Y; Y10; Y10S; Y10S220/00; Y10S220/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1006912A
Cited
US1628635A
Cited
US1921358A
Cited
US2579005A
Cited
US2661062A
Cited
US2659209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |