13 Utility Patents
#70 in Essen
#15,479 in Germany
#275,205 in the World
Forward Citations = 99
Company Filing History:
Didier Engineering Gmbh
Bergwerksverband Gmbh
Krupp Koppers Gmbh
4. 1 out of 333
5. 1 out of 2
Still Otto Gmbh
where one patent can have more than one assignee
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