US2774340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor generator
Assignee: Foster Wheeler Inc
•
Filing: 1954-03-15
•
Granted: 1956-12-18
•
Expires: 1974-03-15
Abstract
No abstract record available.
Inventors
- 👤 Henry J Jankowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:31
CPC Classifications
F; F22; F22B; F22B21/00; F22B21/02; F22B21/04; F22B21/08; F22B21/081
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1922599A
Cited
US1802750A
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US2024232A
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US2393707A
Cited
US2515443A
Cited
US2649846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |