A similar process was patented in 1904 as German patent 150557.

A German patent was granted but the lamp never went into commercial production.

He applied for a German patent in 1919 that was issued in 1926.

The company owned 84 German patents between 1923 and 1933, resulting in 101 foreign registrations.

German patents are often numbered or cited by the Auslegeschrift.

This is described in the German patent 215225.

The German patent for the basic Trix pieces had been granted the previous year, in 1930.

A year later (in German patent 32138, dated 1 July 1885) the keys became wider and shorter.

The West German patent for the additive expired in 1985, opening it up to competition and lower prices.

This invention, protected by German patent 141,029 in 1902, had a profound influence on the production of margarine and vegetable shortening.