US3090180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for cleaning dust-laden gases
Assignee: Individual
•
Filing: 1960-05-19
•
Granted: 1963-05-21
•
Expires: 1980-05-19
Abstract
No abstract record available.
Inventors
- 👤 Berz Max
- 👤 Berz Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:38
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |