1958
- Richard’s son, Günter Effgen, assumes sole responsibility for the production and development of diamond grinding tools. Furthermore, the company promotes the development of a polymer bond as a third bonding group.
1953
- Development of sintered metal bonds used in the local gemstone industry.
1950
- Foundation of a mechanical engineering department for the development of the company’s own grinding machines and grinding tools with electroplated bonds.
1928
- Son Richard takes over the business. In addition to gemstones, the company also grinds technical stones.
Grinding shop, 1928
1922
Julius Effgen & Söhne, 1922
SUPERABRASIVE GRINDING TOOLS
CONVENTIONAL GRINDING TOOLS
49-6785-18 – 0
