US3491376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heart valve with separate suturing ring sub-assembly
Assignee: Individual
•
Filing: 1965-10-06
•
Granted: 1970-01-27
•
Expires: 1985-10-06
Abstract
No abstract record available.
Inventors
- 👤 Donald P Shiley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:22
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2421; A61F2/2409; A61F2/2424; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/791; Y10T137/7911; Y10T137/7913; Y10T137/7914; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412; Y10T29/49826; Y10T29/49863; Y10T29/49876; Y10T29/49904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
SU169745A1
Cited
US1160707A
Cited
US3263239A
Cited
DE1180087B
Cited
US3374489A
Cited
US3312237A
Cited
US3367364A
Cited
US3365728A
Cited
US3371352A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |