Patent US3410233A successfully refreshed from Google Patents.
US3410233A
Expired / Lapsed
US
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Method for the drying and burning of sewage sludge and plant for carrying out this method
Assignee: Hermann Seiler & Sohn AG
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Filing: 1966-11-02
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Granted: 1968-11-12
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Expires: 1986-11-02
Abstract
No abstract record available.
Inventors
- 👤 Seiler Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:20
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/02; D04H3/04; D04H3/045; C; C02; C02F; C02F11/00; C02F11/12; C02F11/13; F; F23; F23G; F23G7/00; F23G7/001
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) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |