US2908890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seisphone and cable assembly
Assignee: ConocoPhillips Co
•
Filing: 1955-06-27
•
Granted: 1959-10-13
•
Expires: 1975-06-27
Abstract
No abstract record available.
Inventors
- 👤 Hollis O Campbell
- 👤 Anthony P Lipski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:47
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/16; G01V1/20; G01V1/201
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1980993A
Cited
US2271864A
Cited
US2348225A
Cited
US2440903A
Cited
US2477172A
Cited
US2601543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |