Patent US3433506A successfully refreshed from Google Patents.
US3433506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature extension joint
Assignee: Baker Hughes Oilfield Operations LLC
•
Filing: 1966-10-21
•
Granted: 1969-03-18
•
Expires: 1986-10-21
Abstract
No abstract record available.
Inventors
- 👤 Talmadge L Crowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:49
CPC Classifications
E; E21; E21B; E21B36/00; E21B17/00; E21B17/02; E21B17/04; E21B17/07; Y; Y10; Y10S; Y10S277/00; Y10S277/931
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US235972A
Cited
US3127182A
Cited
US1671308A
Cited
US3006665A
Cited
US3149845A
Cited
US3217805A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-17 | 1972-09-16 | 1973-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-17 | 1976-09-16 | 1977-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-17 | 1980-09-16 | 1981-03-18 | $7700.00 | Window Closed / Lapsed |