US3503400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Urethral valve
Assignee: SVEN M OSTHAGEN
•
Filing: 1967-07-12
•
Granted: 1970-03-31
•
Expires: 1987-07-12
Abstract
No abstract record available.
Inventors
- 👤 Sven M Osthagen
- 👤 Henry M Wise Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:10
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0067; A61M25/0074; A61M25/0075; A61F; A61F2/00; A61F2/0004; A61F2/0022; Y; Y10; Y10S; Y10S128/00; Y10S128/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US396754A
Cited
US1920006A
Cited
US2547758A
Cited
US2687731A
Cited
US2855932A
Cited
US3344791A
Cited
US3331371A
Cited
US3419008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-30 | 1973-09-29 | 1974-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-30 | 1977-09-29 | 1978-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-30 | 1981-09-29 | 1982-03-31 | $7700.00 | Window Closed / Lapsed |