US3329532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radioisotope heated thruster and generator
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1964-06-03
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Granted: 1967-07-04
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Expires: 1984-06-03
Abstract
No abstract record available.
Inventors
- 👤 George E Austin
- 👤 Robert W Bussard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:42
CPC Classifications
F; F03; F03H; F03H1/00; G; G21; G21D; G21D5/00; G21D5/02; G21H; G21H1/00; G21H1/10; G21H1/103; G21H3/00; H; H10; H10N; H10N10/00; Y; Y02; Y02E; Y02E30/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE25242E
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GB598774A
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DE841613C
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GB738511A
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US2998550A
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GB874660A
Cited
US3087451A
Cited
US3189765A
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US3081365A
Cited
US3184915A
Cited
US3160568A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |