US2990031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling tower diverter
Assignee: KGI Inc
•
Filing: 1957-09-20
•
Granted: 1961-06-27
•
Expires: 1977-09-20
Abstract
No abstract record available.
Inventors
- 👤 Vesta F Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:28
CPC Classifications
F; F28; F28F; F28F25/00; F28F25/02; F28F25/08; F28C; F28C1/00; F28C1/02; Y; Y02; Y02B; Y02B30/00; Y02B30/70; Y10; Y10S; Y10S261/00; Y10S261/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1459461A
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US1848576A
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US810450A
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US1163339A
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US1475639A
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US1665455A
Cited
US1986653A
Cited
US2349777A
Cited
US2562827A
Cited
US2639130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |