US2307662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for controlling wells
Assignee: Baker Hughes Holdings LLC
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Filing: 1939-07-22
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Granted: 1943-01-05
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Expires: 1959-07-22
Abstract
No abstract record available.
Inventors
- 👤 Albert S Baylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:03
CPC Classifications
E; E21; E21B; E21B34/00; E21B34/06; E21B34/063; E21B33/00; E21B33/02; E21B33/08; E21B34/14; E21B34/142
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-01-04 | 1946-07-06 | 1947-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-01-04 | 1950-07-06 | 1951-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-01-04 | 1954-07-06 | 1955-01-05 | $7700.00 | Window Closed / Lapsed |