US2823700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid flow control apparatus
Assignee: Westinghouse Electric Corp
•
Filing: 1954-11-19
•
Granted: 1958-02-18
•
Expires: 1974-11-19
Abstract
No abstract record available.
Inventors
- 👤 Oswald A Christensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:36
CPC Classifications
F; F01; F01D; F01D17/00; F01D17/10; F01D17/12; F01D17/14; F01D17/16; F01D17/162
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US732519A
Cited
US776881A
Cited
US2229165A
Cited
US2222699A
Cited
US2424839A
Cited
US2579043A
Cited
US2583483A
Cited
US2637984A
Cited
GB710579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |