US3493045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressurized shothole plug and water control device
Assignee: Individual
•
Filing: 1968-02-29
•
Granted: 1970-02-03
•
Expires: 1988-02-29
Abstract
No abstract record available.
Inventors
- 👤 Peppino Bassani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:06
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/127
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3125163A
Cited
US2643722A
Cited
US2605637A
Cited
US2781852A
Cited
US2851111A
Cited
US2942666A
Cited
US3039533A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |