US2883149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Butterfly valve for fluids under high pressure
Assignee: Individual
•
Filing: 1954-12-20
•
Granted: 1959-04-21
•
Expires: 1974-12-20
Abstract
No abstract record available.
Inventors
- 👤 Fiorentini Pietro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:45
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/226
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190612293A
Cited
US965999A
Cited
US1744798A
Cited
US2058996A
Cited
AT151541B
Cited
US2273379A
Cited
US2585556A
Cited
US2661182A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |