Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7811027 | Set of paving stones | — | 2010-10-12 |
| 6471440 | Paving stone | — | 2002-10-29 |
| 5133620 | Interconnecting paving stones | — | 1992-07-28 |
| 5028167 | Paving block arrangement for laying a paving-set arc assembly | — | 1991-07-02 |
| D317207 | Paving stone | — | 1991-05-28 |
| D317208 | Paving stone | — | 1991-05-28 |
| D314240 | Lawn stone | — | 1991-01-29 |
| 4965978 | Spacers for the construction of walls from superimposed blocks | — | 1990-10-30 |
| 4941301 | Elements with opening | — | 1990-07-17 |
| 4922678 | Structural assembly for producing interconnecting structures | — | 1990-05-08 |
| 4884378 | Structural assembly for producing walls | — | 1989-12-05 |
| 4782640 | Structural assembly for producing interconnected structures | — | 1988-11-08 |
| D293822 | Paving stone | — | 1988-01-19 |
| D287884 | Paving stone | — | 1987-01-20 |
| 4627764 | Paving stone, process for manufacturing same and device for carrying out the manufacturing process | — | 1986-12-09 |
| 4524551 | Construction units for the erection of walls and method of utilization | — | 1985-06-25 |
| D278934 | Paving stone | — | 1985-05-21 |
| D278935 | Paving stone | — | 1985-05-21 |