US2590976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Splitter vane construction for gas valves
Assignee: RTX Corp
•
Filing: 1947-05-15
•
Granted: 1952-04-01
•
Expires: 1967-05-15
Abstract
No abstract record available.
Inventors
- 👤 Kalitinsky Andrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:42
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/14; F16K15/16; F16K15/1402; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/784; Y10T137/7843
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1022157A
Cited
US1408724A
Cited
US1413035A
Cited
US2199307A
Cited
GB496795A
Cited
US2408056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |