Patent US3010283A successfully refreshed from Google Patents.
US3252015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined thermionic converter and radiator
Assignee: Aerojet Rocketdyne Inc
•
Filing: 1961-02-21
•
Granted: 1966-05-17
•
Expires: 1981-02-21
Abstract
No abstract record available.
Inventors
- 👤 Kenneth P Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:47
CPC Classifications
G; G21; G21D; G21D7/00; G21D7/04; H; H01; H01J; H01J45/00; Y; Y02; Y02E; Y02E30/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2530907A
Cited
US2671817A
Cited
US2759112A
Cited
US3054914A
Cited
US2980819A
Cited
FR1242179A
Cited
US3093567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-16 | 1969-11-15 | 1970-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-16 | 1973-11-15 | 1974-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-16 | 1977-11-15 | 1978-05-17 | $7700.00 | Window Closed / Lapsed |