US3619964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flooring panels
Assignee: Individual
•
Filing: 1969-12-10
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Granted: 1971-11-16
•
Expires: 1989-12-10
Abstract
Abstract LAMINATED FLOORING PANESL ARE FORMED OF A PLURALITY OF UPPER LAYERS OF PLYWOOD AND A BOTTOM LAYER MADE OF SYNTHETIC PLASTIC MATERIAL. INTEGRALLY FORMED WITH THE PLASTIC BOTTOM LAYER ARE CROSS BARS WHICH ELEVATE THE LAYERS ABOVE A SUBFLOOR. THE BARS ARE SPACED APART AND UNDERLAP ADJACENT PANELS. THE PANELS ARE SECURED TO THE SUBFLOOR BY CEMENT. THE BARS HAVE LONGITUDINALLY GROOVES INTO WHICH THE CEMENT ENTERS FOR IMPROVING THE ATTACHMENT TO THE SUBFLOOR. AIR SPACES UNDER THE PANELS IMPROVE SOUND ABSORPTION THERMAL INSULATION, AND MOISTURE RESISTANCE OF THE PANELS.
Inventors
- 👤 Frank Passaro
- 👤 Ned Ross
- 👤 Leo Mondry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:32
CPC Classifications
E; E04; E04F; E04F15/00; E04F15/18; E04F15/181; E04F15/02; E04F15/022; E04F15/04; E04F15/041; E04F15/043; E04F2290/00; E04F2290/04; E04F2290/041; E04F2290/043
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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |