7 Utility Patents
#36 in Pulheim
#35,528 in Germany
#582,799 in the World
Forward Citations = 99
Company Filing History:
Boll & Kirch Filterbau Gmbh
Bergwerksverband Gmbh
Firma Boll & Kirch, Filterbau Gmbh
where one patent can have more than one assignee
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