Patent US2889003A successfully refreshed from Google Patents.
US2889003A
Expired / Lapsed
US
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Cooling tower
Assignee: KGI Inc
•
Filing: 1955-11-01
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Granted: 1959-06-02
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Expires: 1975-11-01
Abstract
No abstract record available.
Inventors
- 👤 Fred C Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:59
CPC Classifications
F; F28; F28C; F28C1/00; F28C1/02; Y; Y02; Y02B; Y02B30/00; Y02B30/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1331404A
Cited
US2022740A
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US2062158A
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US1986653A
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US2088962A
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US2221010A
Cited
US2337983A
Cited
US2553121A
Cited
US2631830A
Cited
GB718487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |