US2882988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elimination of near surface reflection effects
Assignee: ExxonMobil Oil Corp
•
Filing: 1953-03-16
•
Granted: 1959-04-21
•
Expires: 1973-03-16
Abstract
No abstract record available.
Inventors
- 👤 Milton B Dobrin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:47
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/28; G01V2210/00; G01V2210/50; G01V2210/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2144812A
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US2087702A
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US2156198A
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US2243729A
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US2275735A
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US2427421A
Cited
US2628689A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |