US2918807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorption refrigeration systems of the internal coil type
Assignee: Carrier Corp
•
Filing: 1956-04-23
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Granted: 1959-12-29
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Expires: 1976-04-23
Abstract
No abstract record available.
Inventors
- 👤 Jr Louis H Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:56
CPC Classifications
F; F25; F25B; F25B15/00; F25B15/02; F25B15/06; B; B21; B21D; B21D53/00; B21D53/02; F25B2315/00; F25B2315/001
Claims Analysis
Total Claims: 0
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US2713778A
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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) | 1962-12-28 | 1963-06-29 | 1963-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-28 | 1967-06-29 | 1967-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-28 | 1971-06-29 | 1971-12-29 | $7700.00 | Window Closed / Lapsed |