Patent US3425906A successfully refreshed from Google Patents.
US3425906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger of a nuclear reactor
Assignee: Sulzer AG
•
Filing: 1966-04-05
•
Granted: 1969-02-04
•
Expires: 1986-04-05
Abstract
No abstract record available.
Inventors
- 👤 Max Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:59
CPC Classifications
G; G21; G21C; G21C1/00; G21C1/32; F; F22; F22B; F22B1/00; F22B1/02; F22B1/08; F28; F28D; F28D7/00; F28D7/08; F28D7/082; F28D7/085; F28D21/00; F28D2021/0019; F28D2021/0054; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |