US2640329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold plate with means to prevent condensation
Assignee: Individual
•
Filing: 1949-09-24
•
Granted: 1953-06-02
•
Expires: 1969-09-24
Abstract
No abstract record available.
Inventors
- 👤 Ingvardsen Johan Freder Ingvar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:47
CPC Classifications
F; F25; F25B; F25B39/00; F25B39/02; F25D; F25D21/00; F25D21/04; F25B2339/00; F25B2339/02; F25B2339/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1881603A
Cited
US1993325A
Cited
US2042812A
Cited
US2135091A
Cited
US2172877A
Cited
US2238511A
Cited
US2321695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |