US2290842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window channeling
Assignee: Aerojet Rocketdyne Holdings Inc
•
Filing: 1939-12-01
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Granted: 1942-07-21
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Expires: 1959-12-01
Abstract
No abstract record available.
Inventors
- 👤 Russell J Bush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:29
CPC Classifications
B; B60; B60J; B60J10/00; B60J10/30; B60J10/32; B60J10/15; B60J10/18; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12229; Y10T428/12271; Y10T428/12326; Y10T428/12354; Y10T428/12361; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12562; Y10T428/24; Y10T428/2419; Y10T428/24198; Y10T428/24207; Y10T428/24273; Y10T428/24298; Y10T428/24306; Y10T428/31504; Y10T428/31678; Y10T428/31826
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-07-20 | 1946-01-19 | 1946-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-07-20 | 1950-01-19 | 1950-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-07-20 | 1954-01-19 | 1954-07-21 | $7700.00 | Window Closed / Lapsed |