US2763221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel burning system
Assignee: Riley Power Inc
•
Filing: 1952-01-19
•
Granted: 1956-09-18
•
Expires: 1972-01-19
Abstract
No abstract record available.
Inventors
- 👤 Earle C Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:33
CPC Classifications
F; F23; F23K; F23K3/00; F23K3/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US643110A
Cited
US1059559A
Cited
US1176826A
Cited
US1754586A
Cited
FR576552A
Cited
GB352231A
Cited
DE635092C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |