US2889140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Industrial water-cooling tower construction
Assignee: KGI Inc
•
Filing: 1955-11-01
•
Granted: 1959-06-02
•
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
2026-10-27 10:52
CPC Classifications
F; F28; F28C; F28C1/00; Y; Y02; Y02B; Y02B30/00; Y02B30/70
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USRE21794E
Cited
US693195A
Cited
US1966280A
Cited
US2022740A
Cited
DE631512C
Cited
US2471724A
Cited
US2562827A
Cited
FR1071680A
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 |