US3061734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well logging caliper motor control system
Assignee: Dresser Industries Inc
•
Filing: 1959-09-11
•
Granted: 1962-10-30
•
Expires: 1979-09-11
Abstract
No abstract record available.
Inventors
- 👤 Marshall B Broome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:37
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/08; H; H02; H02P; H02P23/00; H02P23/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1778026A
Cited
US2098069A
Cited
US2194822A
Cited
US2435440A
Cited
US2703053A
Cited
US2674701A
Cited
US2851648A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |