US2843349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure fluid operated blowout preventer
Assignee: Individual
•
Filing: 1954-12-27
•
Granted: 1958-07-15
•
Expires: 1974-12-27
Abstract
No abstract record available.
Inventors
- 👤 Meyer Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:31
CPC Classifications
F; F27; F27D; F27D99/00; F27D99/0073; E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB210521A
Cited
US1772210A
Cited
US1896673A
Cited
US2518625A
Cited
US2577613A
Cited
US2622619A
Cited
US2746709A
Cited
US2766765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |