US2614803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submarine drilling and pumping apparatus
Assignee: Individual
•
Filing: 1950-07-18
•
Granted: 1952-10-21
•
Expires: 1970-07-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Walter Wiggins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:12
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/12; E21B7/136; Y; Y10; Y10S; Y10S173/00; Y10S173/01
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |