US2985153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor generation and superheating
Assignee: Elsag Bailey Inc
•
Filing: 1951-12-07
•
Granted: 1961-05-23
•
Expires: 1971-12-07
Abstract
No abstract record available.
Inventors
- 👤 Paul S Dickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:31
CPC Classifications
F; F22; F22G; F22G5/00; F22G5/20; F22B; F22B21/00; F22B21/34; F22B21/341; F22B21/343
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |