US2687023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evaporator for household refrigerators
Assignee: Seeger Refrigerator Co
•
Filing: 1952-04-10
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Granted: 1954-08-24
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Expires: 1972-04-10
Abstract
No abstract record available.
Inventors
- 👤 Jr William B Herndon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:32
CPC Classifications
F; F25; F25B; F25B39/00; F25B39/02; F25B2339/00; F25B2339/02; F25B2339/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |