US3557509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building panel construction
Assignee: BLASKI Manufacturing CO
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Filing: 1968-11-05
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Granted: 1971-01-26
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Expires: 1988-11-05
Abstract
Abstract A BUILDING PANEL CONSTRUCTION MADE UP OF A PLURALITY OF INTERLOCKED SIDE-BY-SIDE PLANKS. EACH PLANK IS A LAMINATED CONSTRUCTION INCLUDING A SELF-SUSTAINING CORE WITH SHAPED EDGES AND COVER SHEETS SHAPED TO OVERLIE THE SURFACES OF THE CORE AND YIELDABLY ENGAGE THE EDGES THEREOF. THE YIELDABLE ENGAGEMENT IS ENCONOMICAL AND PROVIDES AN EASY ASSEMBLY PROCEDURE BY VIRTURE OF THE SHAPES OF THE EDGES. THE PANELS ARE LOCKED INTO AN ASSEMBLY WITH SPECIAL CLIPS WHICH ENGAGE TRANSVERSE MEMBERS.
Inventors
- 👤 John F Blaski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:57
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/26; E04C2/284; E04C2/292; E04B; E04B1/00; E04B1/38; E04B1/541
Claims Analysis
Total Claims: 0
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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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |