US2658440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing and diffusing device
Assignee: Anemostat Corp of America
•
Filing: 1950-12-16
•
Granted: 1953-11-10
•
Expires: 1970-12-16
Abstract
No abstract record available.
Inventors
- 👤 Adolf H Lange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:02
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1725353A
Cited
US2224312A
Cited
US2057494A
Cited
US2158413A
Cited
US2339629A
Cited
GB533139A
Cited
US2310414A
Cited
US2525157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |