Patent US4345480A successfully refreshed from Google Patents.
Patent US2285643A successfully refreshed from Google Patents.
Patent US4238917A successfully refreshed from Google Patents.
Patent US2859797A successfully refreshed from Google Patents.
Patent US3065633A successfully refreshed from Google Patents.
US3065633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well surveying apparatus
Assignee: Pan American Petroleum Corp
•
Filing: 1958-12-29
•
Granted: 1962-11-27
•
Expires: 1978-12-29
Abstract
No abstract record available.
Inventors
- 👤 Lubinski Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:12
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/02; E21B47/022
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-26 | 1966-05-28 | 1966-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-26 | 1970-05-28 | 1970-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-26 | 1974-05-28 | 1974-11-27 | $7700.00 | Window Closed / Lapsed |