US2586002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cycle cooling system
Assignee: Northrop Grumman Corp
•
Filing: 1949-06-20
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Granted: 1952-02-19
•
Expires: 1969-06-20
Abstract
No abstract record available.
Inventors
- 👤 Jr William T Carson
- 👤 Jr Loyal A Williamson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:41
CPC Classifications
B; B64; B64D; B64D13/00; B64D13/06; B64D2013/0603; Y; Y10; Y10S; Y10S55/00; Y10S55/17
Claims Analysis
Total Claims: 0
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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) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |