Patent US3417239A successfully refreshed from Google Patents.
US3417239A
Expired / Lapsed
US
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Method and apparatus for underwater irradiation of substances
Assignee: Atomic Energy of Canada Ltd AECL
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Filing: 1965-05-07
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Granted: 1968-12-17
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Expires: 1985-05-07
Abstract
No abstract record available.
Inventors
- 👤 Francis M Blache-Fraser
- 👤 David R Cowper
- 👤 Eric K Curnow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:45
CPC Classifications
G; G21; G21C; G21C1/00; G21C1/04; G21C1/06; G21C1/14; G21F; G21F5/00; G21F5/015; G21K; G21K5/00; G21K5/02; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 0
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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) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |