US2762897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
De-icing means for aircraft and the like
Assignee: Lockheed Martin Corp
•
Filing: 1951-06-28
•
Granted: 1956-09-11
•
Expires: 1971-06-28
Abstract
No abstract record available.
Inventors
- 👤 Carll D Vrooman
- 👤 Bernard L Messinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:48
CPC Classifications
B; B64; B64D; B64D15/00; B64D15/12; B64D15/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB224648A
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US1846468A
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US2205543A
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US2297540A
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US2552075A
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US2496279A
Cited
FR935233A
Cited
US2464273A
Cited
US2590944A
Cited
US2627012A
Cited
US2625661A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |