US3025794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perforating apparatus
Assignee: Schlumberger Well Surveying Corp
•
Filing: 1957-05-15
•
Granted: 1962-03-20
•
Expires: 1977-05-15
Abstract
No abstract record available.
Inventors
- 👤 Maurice P Lebourg
- 👤 Herbert C Fagan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:39
CPC Classifications
F; F42; F42B; F42B1/00; F42B1/02; F42B1/032
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2605703A
Cited
US2539807A
Cited
US2543057A
Cited
DE818186C
Cited
GB693163A
Cited
US2781849A
Cited
US2849957A
Cited
US2837996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |