38 Utility Patents
#9 in Essen
#2,759 in Germany
#62,257 in the World
Forward Citations = 459
Company Filing History:
Didier Engineering Gmbh
Didier-werke Ag
Bergwerksverband Gmbh
4. 5 out of 7
Thyssengas Gmbh
where one patent can have more than one assignee
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