US3546710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cardiac valve prosthesis for sutureless fixation
Assignee: Individual
•
Filing: 1966-12-12
•
Granted: 1970-12-15
•
Expires: 1986-12-12
Abstract
No abstract record available.
Inventors
- 👤 Valery Ivanovich Shumakov
- 👤 Evgeny Alexandrovich Ivanov
- 👤 Boris Nikolaevich Patsev
- 👤 Matvei Mikhailovich Mats
- 👤 Alexi Alexandrovich Konoplev
- 👤 Boris Pavlovich Vavilov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:02
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2427
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) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |