US2663538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spherical valve
Assignee: PELTON WATER WHEEL Co
•
Filing: 1948-03-29
•
Granted: 1953-12-22
•
Expires: 1968-03-29
Abstract
No abstract record available.
Inventors
- 👤 Bacchi Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:24
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/14; F16K5/20; F16K5/204
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE213331C
Cited
US524922A
Cited
US1656183A
Cited
FR599176A
Cited
DE477295C
Cited
DE624406C
Cited
FR45934E
Cited
US2577725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |