US3733235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabrication of laminated structural panels
Assignee: Westvaco Corp
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Filing: 1971-07-22
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Granted: 1973-05-15
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Expires: 1991-07-22
Abstract
Abstract Method and apparatus for fabricating high strength to weight ratio structural panels from sheet stock such as corrugated paper board having a major strength plane and direction by slicing strips of said sheet stock along a cutting plane transverse of said major strength plane and direction, applying adhesive to one face of said strips conveying said strips in edge-to-edge alignment to a collimating device, re-aligning said strips in face-to-face contact with each other and with planar parallel alignment of strip edges and applying adhesive setting pressure between adjacent faces.
Inventors
- 👤 Light J De
- 👤 C Shelor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:48
CPC Classifications
B; B31; B31D; B31D3/00; B31D3/005; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1067; Y10T156/1069; Y10T156/1075; Y10T156/12; Y10T156/13
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |