US3526939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for covering press rolls
Assignee: Ahlstrom Corp
•
Filing: 1968-12-19
•
Granted: 1970-09-08
•
Expires: 1988-12-19
Abstract
No abstract record available.
Inventors
- 👤 Klaus Kalevi Nikkanen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:36
CPC Classifications
D; D21; D21F; D21F3/00; D21F3/02; D21F3/08; B; B21; B21B; B21B28/00; B21B28/02; B23; B23K; B23K10/00; B23K10/02; B23P; B23P11/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49544; Y10T29/49547; Y10T29/49549; Y10T29/49552; Y10T29/49826; Y10T29/49863; Y10T29/49865; Y10T29/4998; Y10T29/49982
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US861558A
Cited
US2026605A
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US2219085A
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US2765526A
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US3007231A
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US3098285A
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US3156968A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |