Patent US1288038A successfully refreshed from Google Patents.
Patent US2327449A successfully refreshed from Google Patents.
Patent US4694585A successfully refreshed from Google Patents.
Patent US2854090A successfully refreshed from Google Patents.
US2854090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crossflow cooling tower
Assignee: Fluor Corp
•
Filing: 1956-12-24
•
Granted: 1958-09-30
•
Expires: 1976-12-24
Abstract
No abstract record available.
Inventors
- 👤 Jack M Slough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:27
CPC Classifications
F; F28; F28C; F28C1/00; F28C1/04; F28F; F28F25/00; F28F25/02; F28F25/08; F28F25/082; Y; Y02; Y02B; Y02B30/00; Y02B30/70; Y10; Y10S; Y10S261/00; Y10S261/11
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2733055A
Cited
GB190316724A
Cited
US1092334A
Cited
GB518373A
Cited
US2247514A
Cited
US2497389A
Cited
US2776121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |