Patent US3481150A successfully refreshed from Google Patents.
US3481150A
Expired / Lapsed
US
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Chiller structure for refrigeration systems
Assignee: Carrier Corp
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Filing: 1968-06-07
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Granted: 1969-12-02
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Expires: 1988-06-07
Abstract
No abstract record available.
Inventors
- 👤 Richard A English
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:01
CPC Classifications
F; F25; F25B; F25B15/00; F25B15/02; F25B15/04; F28; F28F; F28F21/00; F28F21/08; F28F21/081; F28F21/082; F28F21/083; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |