US2992694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time delayed directional seismograph
Assignee: ExxonMobil Oil Corp
•
Filing: 1955-01-17
•
Granted: 1961-07-18
•
Expires: 1975-01-17
Abstract
No abstract record available.
Inventors
- 👤 Albert W Musgrave
- 👤 James C Eley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:06
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/16; G01V1/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2377903A
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US1998412A
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US2087702A
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US2556299A
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US2473469A
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US2569411A
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US2628689A
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US2609885A
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US2779428A
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US2770312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |