US2820642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer for handling and transporting aircraft engines and other aircraft components
Assignee: Northrop Grumman Corp
•
Filing: 1955-08-08
•
Granted: 1958-01-21
•
Expires: 1975-08-08
Abstract
No abstract record available.
Inventors
- 👤 Harper Morrie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:18
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/06; B60P3/11; B64; B64F; B64F5/00; B64F5/50; Y; Y10; Y10S; Y10S280/00; Y10S280/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US864680A
Cited
US1835133A
Cited
US1942022A
Cited
US2045566A
Cited
US2127972A
Cited
US2567164A
Cited
US2733933A
Cited
US2712874A
Cited
US2724597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |