Patent US3389516A successfully refreshed from Google Patents.
US3389516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prestressed concrete pressure vessel for nuclear reactors
Assignee: Siemens AG
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Filing: 1965-03-04
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Granted: 1968-06-25
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Expires: 1985-03-04
Abstract
No abstract record available.
Inventors
- 👤 Ziegler Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:28
CPC Classifications
G; G21; G21C; G21C13/00; E; E04; E04H; E04H7/00; E04H7/02; E04H7/18; E04H7/20; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |