US2990699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling apparatus
Assignee: Specialties Development Corp
•
Filing: 1958-12-08
•
Granted: 1961-07-04
•
Expires: 1978-12-08
Abstract
No abstract record available.
Inventors
- 👤 David H Dennis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:27
CPC Classifications
F; F25; F25B; F25B9/00; F25B9/02; F25B19/00; Y; Y10; Y10S; Y10S62/00; Y10S62/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1515119A
Cited
US1525095A
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US1497278A
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US1516437A
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US1556734A
Cited
US1625712A
Cited
US1847321A
Cited
US1876915A
Cited
US2261808A
Cited
US2307013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |