US2429976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor generator
Assignee: Babcock and Wilcox Co
•
Filing: 1944-03-22
•
Granted: 1947-11-04
•
Expires: 1964-03-22
Abstract
No abstract record available.
Inventors
- 👤 Ervin G Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:00
CPC Classifications
F; F22; F22G; F22G1/00; F22G1/16; F22B; F22B31/00; F22B31/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1394969A
Cited
US2158508A
Cited
US2271643A
Cited
US2332534A
Cited
GB538008A
Cited
US2347848A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-03 | 1951-05-05 | 1951-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-03 | 1955-05-05 | 1955-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-03 | 1959-05-05 | 1959-11-04 | $7700.00 | Window Closed / Lapsed |