Patent US2999563A successfully refreshed from Google Patents.
US2999563A
Expired / Lapsed
US
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Arrangement for separating out fine solid particles dispersed in gases
Assignee: Bayer AG
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Filing: 1957-10-16
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Granted: 1961-09-12
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Expires: 1977-10-16
Abstract
No abstract record available.
Inventors
- 👤 Wehn Julius
- 👤 Rumpf Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:06
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/08; B04C5/10; B01; B01D; B01D50/00; B01D50/20
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) | 1964-09-11 | 1965-03-13 | 1965-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-11 | 1969-03-13 | 1969-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-11 | 1973-03-13 | 1973-09-12 | $7700.00 | Window Closed / Lapsed |