US2755044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
De-icing arrangements for engine cooling systems
Assignee: RTX Corp
•
Filing: 1950-05-25
•
Granted: 1956-07-17
•
Expires: 1970-05-25
Abstract
No abstract record available.
Inventors
- 👤 Gurney Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:02
CPC Classifications
B; B64; B64D; B64D15/00; B64D15/02; B64D15/04; B64D33/00; B64D33/02; B64D2033/0233
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1779186A
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US1851513A
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US1896222A
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US2133253A
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US2278206A
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US2329606A
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FR871408A
Cited
US2406473A
Cited
US2446663A
Cited
US2482720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |