US2884764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible cycle system
Assignee: DESOMATIC PRODUCTS Inc
•
Filing: 1955-11-25
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Granted: 1959-05-05
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Expires: 1975-11-25
Abstract
No abstract record available.
Inventors
- 👤 Gert K A Siggelin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:00
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F3/153; F25; F25B; F25B13/00; F25B2400/00; F25B2400/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2296530A
Cited
US2037857A
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US2124981A
Cited
US2438120A
Cited
US2549547A
Cited
US2481348A
Cited
US2525560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |