Patent US3064409A successfully refreshed from Google Patents.
US3064409A
Expired / Lapsed
US
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Air purifying installations
Assignee: Aluminium Industrie AG
•
Filing: 1960-02-19
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Granted: 1962-11-20
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Expires: 1980-02-19
Abstract
No abstract record available.
Inventors
- 👤 Schmitt Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:37
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/02; F24F6/06; F24F8/00; F24F8/10; F24F8/117; F24F8/133
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191129346A
Cited
FR500775A
Cited
US2259626A
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US2342689A
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US2273194A
Cited
US2357354A
Cited
US2471724A
Cited
US2631688A
Cited
US2907263A
Cited
US2997132A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |