US2684024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air outlet device for ventilating apparatus
Assignee: ANEMOSTAT Corp
•
Filing: 1951-05-25
•
Granted: 1954-07-20
•
Expires: 1971-05-25
Abstract
No abstract record available.
Inventors
- 👤 Franz J Kurth
- 👤 Leonard R Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:52
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB341460A
Cited
US2142134A
Cited
US2189008A
Cited
US2209121A
Cited
US2418266A
Cited
US2519503A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |