Patent US2548335A successfully refreshed from Google Patents.
US2548335A
Expired / Lapsed
US
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Refrigeration accumulator and dehydrator
Assignee: Weatherhead Co
•
Filing: 1947-04-24
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Granted: 1951-04-10
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Expires: 1967-04-24
Abstract
No abstract record available.
Inventors
- 👤 Roy O Balogh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:12
CPC Classifications
F; F25; F25B; F25B43/00; F25B43/006; F25B43/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1649818A
Cited
US1809833A
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US1809834A
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US1824707A
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US2283989A
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US2273779A
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US2415060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-09 | 1954-10-09 | 1955-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-09 | 1958-10-09 | 1959-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-09 | 1962-10-09 | 1963-04-10 | $7700.00 | Window Closed / Lapsed |