US2817235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature measuring system for underground storage cavern
Assignee: Phillips Petroleum Co
•
Filing: 1954-03-22
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Granted: 1957-12-24
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Expires: 1974-03-22
Abstract
No abstract record available.
Inventors
- 👤 Loy R Hunter
- 👤 Leonard P Meade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:50
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/16; G01K7/18; G01K7/20; G01K1/00; G01K1/02; G01K1/024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1904819A
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US1224385A
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US2420969A
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US2456499A
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US2605315A
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US2672500A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |