US3261147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for the purification of air in installations for the ventilation and airconditioning of operating theatres and similar premises
Assignee: Svenska Flaktfabriken AB
•
Filing: 1962-10-04
•
Granted: 1966-07-19
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Expires: 1982-10-04
Abstract
No abstract record available.
Inventors
- 👤 Allander Claes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:58
CPC Classifications
F; F24; F24F; F24F8/00; F24F8/20; F24F8/22; F24F8/24
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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |