US2602513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well packer
Assignee: Baker Hughes Oilfield Operations LLC
•
Filing: 1949-03-11
•
Granted: 1952-07-08
•
Expires: 1969-03-11
Abstract
No abstract record available.
Inventors
- 👤 Martin B Conrad
- 👤 Ralph K Matlack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:12
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/128
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1928259A
Cited
US1909663A
Cited
US2178844A
Cited
US2222014A
Cited
US2326489A
Cited
US2368928A
Cited
US2430623A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |