US2700201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operating mechanism for rotary slips
Assignee: United States Steel Corp
•
Filing: 1950-04-03
•
Granted: 1955-01-25
•
Expires: 1970-04-03
Abstract
No abstract record available.
Inventors
- 👤 Bannister Bryant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:24
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1312009A
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US1344922A
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US1580099A
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US1652729A
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US1702359A
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US1878372A
Cited
US2054337A
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US2087403A
Cited
US2260611A
Cited
US2340597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-24 | 1958-07-26 | 1959-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-24 | 1962-07-26 | 1963-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-24 | 1966-07-26 | 1967-01-25 | $7700.00 | Window Closed / Lapsed |