US2936852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for removing dust and liquid particles from gases
Assignee: Didier Werke AG
•
Filing: 1958-01-10
•
Granted: 1960-05-17
•
Expires: 1978-01-10
Abstract
No abstract record available.
Inventors
- 👤 Opderbecke Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:19
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/24; B04C5/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL75053C
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NL73663C
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FR550756A
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DE433085C
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US2515155A
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US2399509A
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US2553175A
Cited
FR1075281A
Cited
US2731102A
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US2765918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |