Patent US2486529A successfully refreshed from Google Patents.
US2486529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inclination indicating apparatus
Assignee: Eastman Oil Well Survey Co
•
Filing: 1945-01-22
•
Granted: 1949-11-01
•
Expires: 1965-01-22
Abstract
No abstract record available.
Inventors
- 👤 Jackson Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:00
CPC Classifications
G; G01; G01C; G01C9/00; G01C9/12; G01C9/14; E; E21; E21B; E21B47/00; E21B47/02; E21B47/022; E21B47/0236
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US930158A
Cited
US1803785A
Cited
US1895615A
Cited
US1930832A
Cited
US1905546A
Cited
US2232360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-31 | 1953-05-02 | 1953-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-31 | 1957-05-02 | 1957-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-31 | 1961-05-02 | 1961-11-01 | $7700.00 | Window Closed / Lapsed |