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Patent US3226941A successfully refreshed from Google Patents.
US3226941A
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US
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Klystron cooling system assembly
Assignee: Individual
•
Filing: 1963-10-31
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Granted: 1966-01-04
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Expires: 1983-10-31
Abstract
No abstract record available.
Inventors
- 👤 Charles D Snelling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:39
CPC Classifications
F; F25; F25B; F25B23/00; F25B23/006; F28; F28D; F28D15/00; F28D15/02; F28D15/0266; F28D15/06; H; H01; H01J; H01J23/00; H01J23/005; H01J7/00; H01J7/24
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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |