US2993340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration system
Assignee: Carrier Corp
•
Filing: 1959-04-09
•
Granted: 1961-07-25
•
Expires: 1979-04-09
Abstract
No abstract record available.
Inventors
- 👤 Addison C Sheckler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:41
CPC Classifications
F; F25; F25B; F25B21/00; F25B21/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US413136A
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US1818437A
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US2298250A
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US2798989A
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US2685608A
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US2886618A
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US2749716A
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US2811569A
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US2872788A
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US2919553A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |