Patent US2699655A successfully refreshed from Google Patents.
US2699655A
Expired / Lapsed
US
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Heat pump
Assignee: TYPHOON PROP R TEMP CORP OF FL
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Filing: 1953-08-26
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Granted: 1955-01-18
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Expires: 1973-08-26
Abstract
No abstract record available.
Inventors
- 👤 Edward L Garfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:23
CPC Classifications
F; F25; F25B; F25B13/00; F25B39/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2342566A
Cited
US1206789A
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US1581384A
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US1802396A
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US2172129A
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US2334219A
Cited
US2388314A
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US2589384A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-17 | 1958-07-19 | 1959-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-17 | 1962-07-19 | 1963-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-17 | 1966-07-19 | 1967-01-18 | $7700.00 | Window Closed / Lapsed |