US2678394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiator system
Assignee: Individual
•
Filing: 1945-10-10
•
Granted: 1954-05-11
•
Expires: 1965-10-10
Abstract
No abstract record available.
Inventors
- 👤 Kenneth L Curtis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:42
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/02; H01Q3/08; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1050226A
Cited
US1559962A
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US1598433A
Cited
US2407305A
Cited
US2410831A
Cited
US2415103A
Cited
US2407310A
Cited
US2410827A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |