US3540176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prestressed concrete pressure vessels
Assignee: United Kingdom Atomic Energy Authority
•
Filing: 1966-12-01
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Granted: 1970-11-17
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Expires: 1986-12-01
Abstract
No abstract record available.
Inventors
- 👤 Samuel Brittan Hosegood
- 👤 Alfred Norman Kinkead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:19
CPC Classifications
G; G21; G21C; G21C1/00; G21C1/32; G21C1/326; E; E04; E04H; E04H7/00; E04H7/02; E04H7/18; E04H7/20; G21C13/00; G21C13/08; G21C13/093; G21C13/0933; 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) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |