US3430356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sieve drum gas-solid contact apparatus
Assignee: Anstalt fuer Pantentdienst
•
Filing: 1965-12-20
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Granted: 1969-03-04
•
Expires: 1985-12-20
Abstract
No abstract record available.
Inventors
- 👤 Heinz Fleissner
- 👤 Gerold Fleissner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:21
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/10; F26B13/14; F26B13/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US217102A
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USRE11748E
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US1377793A
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US1504183A
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US1882178A
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FR720216A
Cited
US1974231A
Cited
US2047156A
Cited
US2879607A
Cited
US3140157A
Cited
US3315370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |