US2541280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air mixing and delivery device
Assignee: Anemostat Corp of America
•
Filing: 1947-06-27
•
Granted: 1951-02-13
•
Expires: 1967-06-27
Abstract
No abstract record available.
Inventors
- 👤 Leonard R Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:44
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB379430A
Cited
US1878012A
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US2012179A
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US2000597A
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US2122168A
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US2159276A
Cited
GB530178A
Cited
US2314569A
Cited
US2345537A
Cited
US2442963A
Cited
GB599956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |