US2467860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plug trap and indicator apparatus
Assignee: Baker Hughes Oilfield Operations LLC
•
Filing: 1946-07-20
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Granted: 1949-04-19
•
Expires: 1966-07-20
Abstract
No abstract record available.
Inventors
- 👤 Dean F Saurenman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:48
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/14; E21B33/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2177601A
Cited
US2192400A
Cited
US2196661A
Cited
US2222014A
Cited
US2310483A
Cited
US2376605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-18 | 1952-10-18 | 1953-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-18 | 1956-10-18 | 1957-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-18 | 1960-10-18 | 1961-04-19 | $7700.00 | Window Closed / Lapsed |