US2591859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gripping device
Assignee: Individual
•
Filing: 1948-01-16
•
Granted: 1952-04-08
•
Expires: 1968-01-16
Abstract
No abstract record available.
Inventors
- 👤 Herbert C Otis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:25
CPC Classifications
E; E21; E21B; E21B19/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US644638A
Cited
US1127066A
Cited
US1494585A
Cited
US1552062A
Cited
US1693502A
Cited
US1726521A
Cited
US1837990A
Cited
US1871562A
Cited
US2231923A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |