US3416237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for drying flexible material such as paper and board formed from cellulosic fibrous material
Assignee: Research Association for the Paper and Board Printing and Packaging Industries
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Filing: 1966-12-21
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Granted: 1968-12-17
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Expires: 1986-12-21
Abstract
No abstract record available.
Inventors
- 👤 Sutherland Charles Arthur Orr
- 👤 Luckins John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:05
CPC Classifications
D; D21; D21F; D21F5/00
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) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |