US3426513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicular vortex cyclone type air and gas purifying device
Assignee: Individual
•
Filing: 1967-11-13
•
Granted: 1969-02-11
•
Expires: 1987-11-13
Abstract
No abstract record available.
Inventors
- 👤 Kurt Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:04
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/022; Y; Y10; Y10S; Y10S55/00; Y10S55/28; Y10S55/30
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-11 | 1972-08-12 | 1973-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-11 | 1976-08-12 | 1977-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-11 | 1980-08-12 | 1981-02-11 | $7700.00 | Window Closed / Lapsed |