US2623980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric steam generator and control means therefor
Assignee: Combustion Engineering Inc
•
Filing: 1947-11-28
•
Granted: 1952-12-30
•
Expires: 1967-11-28
Abstract
No abstract record available.
Inventors
- 👤 Toensfeldt Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:55
CPC Classifications
F; F22; F22B; F22B1/00; F22B1/28; F22B1/30; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/27; Y10T137/2931; Y10T137/2937; Y10T137/294; Y10T137/3115; Y10T137/3118; Y10T137/6416; Y10T137/6606; Y10T137/7287; Y10T137/7303
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1665793A
Cited
US1504928A
Cited
US2180445A
Cited
US2185786A
Cited
US2421311A
Cited
US2453210A
Cited
US2485999A
Cited
US2453211A
Cited
US2454174A
Cited
US2485762A
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 |