US3203648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for removing boundary layer air from aircraft
Assignee: Northrop Grumman Corp
•
Filing: 1961-12-26
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Granted: 1965-08-31
•
Expires: 1981-12-26
Abstract
No abstract record available.
Inventors
- 👤 Vanesian Aram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:20
CPC Classifications
B; B64; B64C; B64C21/00; B64C21/02; B64C21/06; B64C2230/00; B64C2230/04; B64C2230/22; Y; Y02; Y02T; Y02T50/00; Y02T50/10
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) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |