US3012547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unitized steam generator
Assignee: Westinghouse Electric Corp
•
Filing: 1955-04-21
•
Granted: 1961-12-12
•
Expires: 1975-04-21
Abstract
No abstract record available.
Inventors
- 👤 Palle C Ostergaard
- 👤 Robert K Sayre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:32
CPC Classifications
F; F22; F22B; F22B1/00; F22B1/02; F22B1/16
Claims Analysis
Total Claims: 0
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US2729433A
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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) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |