US2670910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft
Assignee: Blackburn and General Aircraft Ltd
•
Filing: 1950-08-16
•
Granted: 1954-03-02
•
Expires: 1970-08-16
Abstract
No abstract record available.
Inventors
- 👤 Hill Geoffrey Terence Roland
- 👤 Guppy Thomas George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:56
CPC Classifications
B; B64; B64C; B64C3/00; B64C3/38; B64C3/40; Y; Y02; Y02T; Y02T50/00; Y02T50/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1215295A
Cited
GB454556A
Cited
US2074897A
Cited
US2173538A
Cited
FR856763A
Cited
US2419161A
Cited
US2376636A
Cited
US2596436A
Cited
US2555862A
Cited
US2511265A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |