Patent US3741859A successfully refreshed from Google Patents.
US3741859A
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US
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Reinforced corrugated board member
Assignee: Individual
•
Filing: 1970-08-14
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Granted: 1973-06-26
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Expires: 1990-08-14
Abstract
Abstract A REINFORCED CORRUGATED MEMBER WHEREIN THE MEMBER INCLUDES A CORRUGATED SUB-MERGED 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
- 👤 K Wandel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:54
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; Y10T156/1007; Y10T156/1016; Y10T156/102; Y10T156/1025; Y10T156/1052; Y10T156/1084; Y10T156/1085; Y10T156/1087; Y10T156/12; Y10T428/00; Y10T428/24; Y10T428/24132; Y10T428/24273; Y10T428/24298; Y10T428/24314; Y10T428/24628; Y10T428/24669; Y10T428/24694; Y10T428/24711; Y10T428/24727
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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |