US2670082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alcohol injection system for deicing aircraft fuel filters and strainers
Assignee: Individual
•
Filing: 1949-11-23
•
Granted: 1954-02-23
•
Expires: 1969-11-23
Abstract
No abstract record available.
Inventors
- 👤 Robert G Dunn
- 👤 Robert F Heiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:28
CPC Classifications
F; F02; F02M; F02M25/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1054702A
Cited
US2080488A
Cited
US2140626A
Cited
US2172882A
Cited
US2229498A
Cited
US2302418A
Cited
US2366830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |