US2383453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anchoring device
Assignee: Individual
•
Filing: 1942-06-29
•
Granted: 1945-08-28
•
Expires: 1962-06-29
Abstract
No abstract record available.
Inventors
- 👤 Charles S Crickmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:57
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/10; E21B23/00; E21B23/01; E21B33/00; E21B33/10; E21B33/12; E21B33/129
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-08-27 | 1949-02-26 | 1949-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-08-27 | 1953-02-26 | 1953-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-08-27 | 1957-02-26 | 1957-08-28 | $7700.00 | Window Closed / Lapsed |