US3054449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well tools for submarine wells
Assignee: Otis Engineering Corp
•
Filing: 1957-11-04
•
Granted: 1962-09-18
•
Expires: 1977-11-04
Abstract
No abstract record available.
Inventors
- 👤 Harry B Schramm
- 👤 Raulins George Max
- 👤 John V Fredd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:41
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/04; E21B33/043; Y; Y10; Y10S; Y10S285/00; Y10S285/92
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1912823A
Cited
US2409811A
Cited
US2577068A
Cited
US2698056A
Cited
US2862560A
Cited
US2862564A
Cited
US2889886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |