US3019414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for producing and transmitting borehole signals
Assignee: Well Surveys Inc
•
Filing: 1957-11-12
•
Granted: 1962-01-30
•
Expires: 1977-11-12
Abstract
No abstract record available.
Inventors
- 👤 Peterson Glen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:05
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2349225A
Cited
US2481014A
Cited
US2554844A
Cited
US2586745A
Cited
US2703491A
Cited
US2659014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-29 | 1965-07-31 | 1966-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-29 | 1969-07-31 | 1970-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-29 | 1973-07-31 | 1974-01-30 | $7700.00 | Window Closed / Lapsed |