Patent US3589964A successfully refreshed from Google Patents.
US3589964A
Expired / Lapsed
US
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Reinforced corrugated board member
Assignee: Individual
•
Filing: 1969-04-30
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Granted: 1971-06-29
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Expires: 1989-04-30
Abstract
Abstract A REINFORCED CORRUGATED MAMBER AND THE METHOD AND APPARATUS FOR MAKING SAME WHEREIN THE MEMBER INCLUDES A CORRUGATED SUB-MEMBER HAVING A CORRUGATED WEB AND FACING WEB ADHERED THERETO, A PLURALITY OF SLITS IN THE EXPOSED FLUTES OF THE SUB-MEMBER AND A PLURALITY OF STRIPS OF REINFORCING MATERIAL SECURED IN THE SLITS.
Inventors
- 👤 Kurt Wandel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:19
CPC Classifications
B; B31; B31F; B31F1/00; B31F1/20; B31F1/24; B31F1/26; B31F1/28; B31F1/2813; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1025; Y10T156/1052; Y10T156/1082; Y10T156/1084; Y10T156/1087
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |