US2816735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for drilling with dissociated gas
Assignee: RACHEL DALINDA
•
Filing: 1956-07-13
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Granted: 1957-12-17
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Expires: 1976-07-13
Abstract
No abstract record available.
Inventors
- 👤 Joseph Z Dalinda
- 👤 Spiro Roman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:22
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1025029A
Cited
CH147729A
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US1993641A
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US1993642A
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US2286191A
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US2308860A
Cited
US2587331A
Cited
US2548463A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |