Patent US2463027A successfully refreshed from Google Patents.
US2463027A
Expired / Lapsed
US
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Refrigeration apparatus arranged for periodic defrosting
Assignee: Kramer Trenton Co
•
Filing: 1945-03-09
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Granted: 1949-03-01
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Expires: 1965-03-09
Abstract
No abstract record available.
Inventors
- 👤 Frie George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:50
CPC Classifications
F; F25; F25B; F25B31/00; F25B31/002; F25B31/004; F25B47/00; F25B47/02; F25B47/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE18263E
Cited
US1538486A
Cited
US2095102A
Cited
US2195924A
Cited
US2281770A
Cited
US2351140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-29 | 1952-08-30 | 1953-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-29 | 1956-08-30 | 1957-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-29 | 1960-08-30 | 1961-03-01 | $7700.00 | Window Closed / Lapsed |