US2623698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion control system
Assignee: Elsag Bailey Inc
•
Filing: 1947-12-03
•
Granted: 1952-12-30
•
Expires: 1967-12-03
Abstract
No abstract record available.
Inventors
- 👤 Paul S Dickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:32
CPC Classifications
F; F23; F23C; F23C3/00; F23C3/006; F23C3/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1820939A
Cited
US1987433A
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US2264511A
Cited
US1562087A
Cited
US2172317A
Cited
US2298257A
Cited
US2357301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |