US2814512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing devices
Assignee: Bristol Aeroplane Co Ltd
•
Filing: 1953-05-25
•
Granted: 1957-11-26
•
Expires: 1973-05-25
Abstract
No abstract record available.
Inventors
- 👤 Quinn Neville Raymond Lloyd
- 👤 Blackwell Basil Davenport
- 👤 Scott Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:41
CPC Classifications
F; F01; F01D; F01D11/00; F01D11/02; F01D11/025
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1960-11-25 | 1961-05-27 | 1961-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-25 | 1965-05-27 | 1965-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-25 | 1969-05-27 | 1969-11-26 | $7700.00 | Window Closed / Lapsed |