US2800113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam generator
Assignee: Babcock and Wilcox Co
•
Filing: 1948-03-16
•
Granted: 1957-07-23
•
Expires: 1968-03-16
Abstract
No abstract record available.
Inventors
- 👤 George W Kessler
- 👤 Johannes H Ammon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:14
CPC Classifications
F; F22; F22B; F22B1/00; F22B1/22
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) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |