Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868899 | Space heating element comprising a ceramic shaped body provided with an electrically resistive coating, in particular in the form of a ceramic tile | Martin Bard | 1989-09-19 |
| 4839500 | Covering for wall, ceiling or floor linings | Martin Bard | 1989-06-13 |
| 4833300 | Space heating element having a ceramic body with an electrically resistive coating thereon | Martin Bard | 1989-05-23 |
| 4821478 | Large-format ceramic tile with holding elements provided on the side facing away from its visible side | Martin Bard | 1989-04-18 |
| 4821484 | Double floor construction | Martin Bard | 1989-04-18 |