Patent US3743568A successfully refreshed from Google Patents.
US3743568A
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Corrugated panel structure having vertically oriented columnar shapes
Assignee: WOLF H DE
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Filing: 1971-03-31
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Granted: 1973-07-03
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Expires: 1991-03-31
Abstract
Abstract A PANEL STRUCTURE FABRICATED FROM A CONTINUOUS STRUCTURAL SHEET MEMBER CONSISTING OF A SINGLE FLAT SHEET HAVING A CORRUGATED SHEET AFFIXED TO EACH SIDE THEREOF. THE STRUCTURAL MEMBER IS FOLDED IN AN ACCORDION-LIKE PLEATED MANNER SO THAT THE CORRUGATED PORTIONS OF EACH PLATE MATINGLY AND NESTABLY INTERLOCK WITH THE CORRUGATED PORTIONS OF THE NEXT ADJACENT PLEAT SO AS TO FORM A PANEL STRUCTURE HAVING A PLURALITY OF VERTICALLY ORIENTED COLUMNAR SHAPES PROVIDED THERETHROUGH.
Inventors
- 👤 Wolf H De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:32
CPC Classifications
B; B32; B32B; B32B29/00; B32B29/08; B65; B65D; B65D65/00; B65D65/38; B65D65/40; B65D65/403; B32B29/002; B32B29/005; E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/16; E04C2/30; E04C2/32; B32B2607/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24628; Y10T428/24661; Y10T428/24669; Y10T428/24694; Y10T428/24711; Y10T428/24744
Claims Analysis
Total Claims: 0
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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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |