US3405758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air mixing apparatus with auxiliary air outlet
Assignee: TDK Micronas GmbH
•
Filing: 1966-03-16
•
Granted: 1968-10-15
•
Expires: 1986-03-16
Abstract
No abstract record available.
Inventors
- 👤 Wythe F Walker
- 👤 Charles W Demarest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:09
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1840565A
Cited
US2131725A
Cited
US2327664A
Cited
US2819023A
Cited
US2854915A
Cited
US2892314A
Cited
US2963956A
Cited
US3217790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |