US3428242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unitary simple/bootstrap air cycle system
Assignee: RTX Corp
•
Filing: 1967-06-02
•
Granted: 1969-02-18
•
Expires: 1987-06-02
Abstract
No abstract record available.
Inventors
- 👤 George C Rannenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:39
CPC Classifications
B; B64; B64D; B64D13/00; B64D13/06; F; F02; F02C; F02C6/00; F02C6/04; F02C6/06; B64D2013/0603; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2064126A
Cited
US2083167A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |