US3490446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contraceptive
Assignee: Státní Výzkumný Ústav Textilní
•
Filing: 1967-04-06
•
Granted: 1970-01-20
•
Expires: 1987-04-06
Abstract
No abstract record available.
Inventors
- 👤 Milos Slonek
- 👤 Stanislav Holanek
- 👤 Pavel Cerny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:21
CPC Classifications
A; A61; A61F; A61F6/00; A61F6/06; A61F6/14; A61F6/142
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2122579A
Cited
US2176559A
Cited
US3200815A
Cited
US3250271A
Cited
US3306286A
Cited
US3397691A
Cited
US3312214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |