Patent US3450203A successfully refreshed from Google Patents.
US3450203A
Expired / Lapsed
US
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Device for well casing perforation with an abrasive fluid jet
Assignee: MINI PETROLULUI
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Filing: 1967-03-09
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Granted: 1969-06-17
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Expires: 1987-03-09
Abstract
No abstract record available.
Inventors
- 👤 Teodor Patron
- 👤 Ion Alexandru Niculescu
- 👤 Efrem Anastasescu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:39
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/11; E21B43/114
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA467765A
Cited
US2034768A
Cited
US2327051A
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US2329157A
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US2624409A
Cited
US3066735A
Cited
SU152214A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |