US3519854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermionic converter with hall effect collection means
Assignee: Individual
•
Filing: 1967-02-20
•
Granted: 1970-07-07
•
Expires: 1987-02-20
Abstract
No abstract record available.
Inventors
- 👤 Edwin D Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:32
CPC Classifications
H; H01; H01J; H01J3/00; H01J3/02; H01J3/029; H02; H02K; H02K44/00; H02K44/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2212640A
Cited
US2892962A
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US2915652A
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US2928048A
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US3089079A
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US3041481A
Cited
US3118107A
Cited
US3202863A
Cited
US3202844A
Cited
US3322978A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |