Patent US3697329A successfully refreshed from Google Patents.
US3697329A
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Radioisotope heat source system
Assignee: United States Atomic Energy Commission
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Filing: 1971-06-04
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Granted: 1972-10-10
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Expires: 1991-06-04
Abstract
Abstract A RADIOISOTOPE HEAT SOURCE SYSTEM WHICH COMPRISES A PLURALITY OF RADIOISOTOPIC HEAT SOURCE DEVICES ARRANGED HELICALLY OR IN OFFSET LEVELS ABOUT AND WITHIN AN ELONGATED SUPPORTING MEMEBER. THE SUPPORTING MEMBER PROVIDES PROTECTION AND EFFECTIVE HEAT UTILIZATION THEREOF. ADDITIONAL PROTECTIVE AND HEAT TRANSFER LAYERS MAY BE PROVIDES ABOUT THE HEAT SOURCE DEVICES AND SUPPORTING MEMBER ALONG WITH MEANS FOR UTILIZING HEAT PRODUCED THEREBY.
Inventors
- 👤 James F Bunker
- 👤 James E Poland
- 👤 Emerson H Sayell
- 👤 George V Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:10
CPC Classifications
G; G21; G21H; G21H1/00; G21H1/10; G21H1/103; G21G; G21G4/00; G21G4/04; G21G4/06
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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |