US2942432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Defrosting of evaporator
Assignee: Individual
•
Filing: 1955-12-12
•
Granted: 1960-06-28
•
Expires: 1975-12-12
Abstract
No abstract record available.
Inventors
- 👤 Muffly Glenn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:51
CPC Classifications
F; F25; F25B; F25B47/00; F25B47/02; F25B47/022; F25D; F25D11/00; F25D11/02; F25D11/022; F25D2400/00; F25D2400/30
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |