US3039735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor for subterranean work
Assignee: TURBODRILL INTERNATIONAL CORP
•
Filing: 1957-10-28
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Granted: 1962-06-19
•
Expires: 1977-10-28
Abstract
No abstract record available.
Inventors
- 👤 Tiraspolsky Wladimir
- 👤 Rouviere Roger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:24
CPC Classifications
E; E21; E21B; E21B4/00; E21B4/02; Y; Y10; Y10S; Y10S415/00; Y10S415/903
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US880479A
Cited
US2348047A
Cited
US2646962A
Cited
US2685405A
Cited
US2650017A
Cited
US2736384A
Cited
US2819880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |