Patent US2604904A successfully refreshed from Google Patents.
US2604904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary valve
Assignee: Bendix Aviation Corp
•
Filing: 1946-12-23
•
Granted: 1952-07-29
•
Expires: 1966-12-23
Abstract
No abstract record available.
Inventors
- 👤 Flanagan Robert Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:09
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/08; F16K11/085; B; B64; B64D; B64D15/00; B64D15/16; B64D15/166; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86638; Y10T137/86646; Y10T137/86654
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-29 | 1956-01-28 | 1956-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-29 | 1960-01-28 | 1960-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-29 | 1964-01-28 | 1964-07-29 | $7700.00 | Window Closed / Lapsed |