US2612592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for electric steam generators
Assignee: Combustion Engineering Inc
•
Filing: 1950-10-03
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Granted: 1952-09-30
•
Expires: 1970-10-03
Abstract
No abstract record available.
Inventors
- 👤 Jr William L Paulison
- 👤 Harvey C Mittendorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:38
CPC Classifications
F; F22; F22B; F22B1/00; F22B1/28; F22B1/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1987381A
Cited
US2421311A
Cited
US2453210A
Cited
US2485999A
Cited
US2453211A
Cited
US2535569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-30 | 1956-03-31 | 1956-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-30 | 1960-03-31 | 1960-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-30 | 1964-03-31 | 1964-09-30 | $7700.00 | Window Closed / Lapsed |