Patent US2778203A successfully refreshed from Google Patents.
US2778203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning system having a cooling tower or the like
Assignee: Individual
•
Filing: 1954-04-13
•
Granted: 1957-01-22
•
Expires: 1974-04-13
Abstract
No abstract record available.
Inventors
- 👤 William F R Griffith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:28
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/02; F24F6/04; 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)
AT136889B
Cited
US2118949A
Cited
US2165979A
Cited
US2157070A
Cited
US2194711A
Cited
US2233633A
Cited
US2386826A
Cited
US2414135A
Cited
US2497389A
Cited
US2631021A
Cited
US2655795A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-22 | 1960-07-23 | 1961-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-22 | 1964-07-23 | 1965-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-22 | 1968-07-23 | 1969-01-22 | $7700.00 | Window Closed / Lapsed |