Marble faced wall panels and method of making same
Abstract
Abstract THE INVENTION PROVIDES SURFACE ELEMENTS SUCH AS TILES OR PANELS CONSISTING OF A THIN LAMINA OF MARBLE BONDED TO A BACKING CONSISTING OF A METAL SHEET OF HONEYCOMB OR CELLULAR STRUCTURE OF SUBSTANTIALLY GREATER THICKNESS THAN SAID LAMINA WHICH AT LEAST ON THE SIDE REMOTE FROM THE MARBLE LAMINA HAS A SKIN OF TENACIOUS SHEET MATERIAL BONDED THERETO. THE RESULTANT COMPOSITE ELEMENT IS EXTREMELY RIGID, LIGHT AND CHEAP TO PRODUCE IN COMPARISON WITH SOLID MARBLE AND MAY BE CUT INTO ANY DESIRED SHAPE AND USED AS A SUBSTITUTE FOR SOLID MARBLE, BUT WITH THE ADVANTAGES OF LIGHTNESS, STRENGTH AND LOW COST THUS ENABLING SUCH SURFACE ELEMENTS TO BE USED FOR MANY PURPOSES WHERE THE USE OF SOLID MARBLE WOULD BE ECONOMICALLY OR PRACTICABLY PROHIBITIVE. D R A W I N G
Inventors
- 👤 P Bourke
Bibliographic Details
Claims Analysis
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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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |