US2573120A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat radiator and method of radiating heat
Assignee: Individual
•
Filing: 1947-12-04
•
Granted: 1951-10-30
•
Expires: 1967-12-04
Abstract
No abstract record available.
Inventors
- 👤 Richard F Wandelt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:07
CPC Classifications
F; F24; F24D; F24D13/00; F24D13/02; F24D13/022; Y; Y02; Y02B; Y02B30/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1374693A
Cited
US1578326A
Cited
US1698703A
Cited
CH125147A
Cited
US2133183A
Cited
GB506529A
Cited
US2251697A
Cited
US2419655A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |