Patent US2475841A successfully refreshed from Google Patents.
US2475841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning unit
Assignee: U S THERMO CONTROL CO
•
Filing: 1944-06-15
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Granted: 1949-07-12
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Expires: 1964-06-15
Abstract
No abstract record available.
Inventors
- 👤 Frederick M Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:42
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/20; F; F25; F25D; F25D19/00; F25D19/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1917537A
Cited
US2054350A
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US2162152A
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US2096297A
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US2115785A
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US2196310A
Cited
US2161667A
Cited
US2263476A
Cited
US2338931A
Cited
US2336735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-11 | 1953-01-10 | 1953-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-11 | 1957-01-10 | 1957-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-11 | 1961-01-10 | 1961-07-12 | $7700.00 | Window Closed / Lapsed |