Issued Patents All Time
Showing 26–47 of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4690598 | Expansion dowel | — | 1987-09-01 |
| 4673321 | Expansion dowel | Robert Huegel, Rudolf Leuthi | 1987-06-16 |
| 4669935 | Expansion dowel assembly | — | 1987-06-02 |
| 4659270 | Expansion dowel formed of an expansion sleeve and a wedge-shaped expansion element | — | 1987-04-21 |
| 4656806 | Expansion anchor assembly | Erich Leibhard | 1987-04-14 |
| 4642008 | Expansion dowel | — | 1987-02-10 |
| 4636123 | Expansion anchor assembly | — | 1987-01-13 |
| 4611963 | Expansion dowel with an expansion wedge and an annular expansion member | Peter Fröhlich | 1986-09-16 |
| 4602902 | Expansion dowel assembly | — | 1986-07-29 |
| 4579490 | Expansion dowel assembly | — | 1986-04-01 |
| 4566610 | Hand-held device for dispensing a multi-component substance | — | 1986-01-28 |
| 4560311 | Expansion dowel assembly | Peter Froehlich | 1985-12-24 |
| 4522316 | Container for plastic substances | Armin Hoffmann | 1985-06-11 |
| 4471888 | Device for dispensing measured amounts of multi-component materials | Erich Leibhard, Heinz Gruenewald | 1984-09-18 |
| 4452285 | Device for filling boreholes | Erich Leibhard, Arndt Bergner, Gusztav Lang | 1984-06-05 |
| 4427327 | Anchor bolt including elongated spreader wedge | — | 1984-01-24 |
| 4320857 | Device for the melting and measured discharge of a thermoplastic adhesive | Erich Leibhard | 1982-03-23 |
| 4312615 | Fastening unit including an anchoring member and a spreader wedge | — | 1982-01-26 |
| 4312611 | Fastening element assembly with a spreading wedge | — | 1982-01-26 |
| 4289257 | Device for melting a solid body of adhesive material | Franz Popp, Hanspeter Ruoff | 1981-09-15 |
| 4275637 | Fastening element assembly | Gusztav Lang | 1981-06-30 |
| 4252289 | Two-part pipe clip | — | 1981-02-24 |