Patent US3527638A successfully refreshed from Google Patents.
US3527638A
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Corrugated paper board machine with means for forming a crown on a corrugating roll
Assignee: MAS FAB WERNER H K PETERS GmbH
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Filing: 1967-09-20
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Granted: 1970-09-08
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Expires: 1987-09-20
Abstract
No abstract record available.
Inventors
- 👤 Rolf Karl Sonnichsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:18
CPC Classifications
B; B31; B31F; B31F1/00; B31F1/20; B31F1/24; B31F1/26; B31F1/28; B31F1/2845; B31F1/2863; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1960677A
Cited
US2310421A
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GB633545A
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US2542230A
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US2687165A
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GB767301A
Cited
US2960144A
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 |