Patent US3534202A successfully refreshed from Google Patents.
US3534202A
Expired / Lapsed
US
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Thermionic converter
Assignee: Babcock and Wilcox Co
•
Filing: 1967-08-24
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Granted: 1970-10-13
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Expires: 1987-08-24
Abstract
No abstract record available.
Inventors
- 👤 Paul F Schutt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:40
CPC Classifications
G; G21; G21D; G21D7/00; G21D7/04; H; H01; H01J; H01J45/00; Y; Y02; Y02E; Y02E30/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB854036A
Cited
US3093567A
Cited
US3234412A
Cited
US3341719A
Cited
US3270802A
Cited
US3304232A
Cited
US3330974A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |