Patent US2621490A successfully refreshed from Google Patents.
US2621490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerant condenser
Assignee: International Motors LLC
•
Filing: 1950-05-05
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Granted: 1952-12-16
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Expires: 1970-05-05
Abstract
No abstract record available.
Inventors
- 👤 Charles D Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:34
CPC Classifications
F; F25; F25D; F25D23/00; F25D23/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1800150A
Cited
US1880877A
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US1837253A
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US1961070A
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US2355621A
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US2387465A
Cited
US2471960A
Cited
US2467191A
Cited
US2585736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |