US3521620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vascular coil spring guide with bendable tip
Assignee: Individual
•
Filing: 1967-10-30
•
Granted: 1970-07-28
•
Expires: 1987-10-30
Abstract
No abstract record available.
Inventors
- 👤 William A Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:04
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/09; A61M25/09041; A61B; A61B1/00; A61B1/005; A61B1/0051; A61B1/0055; A61B1/0056; A61M25/09016; A61M25/09033; A61M2025/09058; A61M2025/09083
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |