Patent US2961226A successfully refreshed from Google Patents.
US2961226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evaporative cooler and water control means therefor
Assignee: McGraw Edison Co
•
Filing: 1958-01-06
•
Granted: 1960-11-22
•
Expires: 1978-01-06
Abstract
No abstract record available.
Inventors
- 👤 Albert B Goettl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:47
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/02; F24F6/04; F24F2221/00; F24F2221/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2281799A
Cited
US2486138A
Cited
US970387A
Cited
US981725A
Cited
US1502573A
Cited
US1753833A
Cited
US1929410A
Cited
US2273587A
Cited
US2319565A
Cited
US2583291A
Cited
US2730905A
Cited
US2731252A
Cited
US2799469A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |