US2665748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel burner
Assignee: Individual
•
Filing: 1949-05-27
•
Granted: 1954-01-12
•
Expires: 1969-05-27
Abstract
No abstract record available.
Inventors
- 👤 Frank H Cornelius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:33
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/36; F23D11/40; F23D11/001
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US471673A
Cited
US940813A
Cited
US1733792A
Cited
US1491158A
Cited
US2120372A
Cited
US2175866A
Cited
US2072731A
Cited
US2304294A
Cited
US2473347A
Cited
US2469272A
Cited
US2516063A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |