US3433305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods for discharging fluent substances into well bores
Assignee: Schlumberger Technology Corp
•
Filing: 1967-11-06
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Granted: 1969-03-18
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Expires: 1987-11-06
Abstract
No abstract record available.
Inventors
- 👤 William T Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:01
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/11; E21B43/119; E21B43/1195
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2693856A
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US2832415A
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US2805722A
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US3064733A
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US3138206A
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US3195631A
Cited
US3361204A
Cited
US3379251A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-17 | 1972-09-16 | 1973-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-17 | 1976-09-16 | 1977-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-17 | 1980-09-16 | 1981-03-18 | $7700.00 | Window Closed / Lapsed |