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Patent US3497418A successfully refreshed from Google Patents.
US3497418A
Expired / Lapsed
US
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Method for drying fibrous masses
Assignee: GEA Process Engineering AS
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Filing: 1967-08-21
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Granted: 1970-02-24
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Expires: 1987-08-21
Abstract
No abstract record available.
Inventors
- 👤 Allan Thale
- 👤 Olav Bjorn Hovstad
- 👤 Lennart Ivnas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:58
CPC Classifications
D; D21; D21C; D21C9/00; D21C9/18; D21C9/185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2474314A
Cited
US2627375A
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US3055795A
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US3195241A
Cited
US3364101A
Cited
US3316141A
Cited
US3414469A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |