US2913658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measurement of physical conditions of porous material
Assignee: ExxonMobil Oil Corp
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Filing: 1954-03-29
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Granted: 1959-11-17
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Expires: 1974-03-29
Abstract
No abstract record available.
Inventors
- 👤 Burdine Nathan Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:19
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/08; G01R; G01R33/00; G01R33/20; G01R33/28; G01R33/30; G01V; G01V3/00; G01V3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |