@misc{JerominSeubertBeilharzetal.1992,
  author    = {Jeromin, G{\"u}nter Erich and Seubert, Bernhard and Beilharz, Helmut and Fickert, Werner [u.a.]},
  title     = {Wasserfreie Applikationsform niedermolekularer Alkalihuminate : Europ{\"a}ische Patentschrift EP0283573B1 ; Ver{\"o}ffentlichungstag im Patentblatt: 09.04.1992 / Anmelder: R{\"u}tgerswerke AG, 6000 Frankfurt. Erfinder: Bernhard Seubert ; Helmut Beilharz ; G{\"u}nter Jeromin ; Werner Fickert ...},
  publisher = {Deutsches Patent- und Markenamt},
  address   = {M{\"u}nchen},
  pages     = {3 S.},
  year      = {1992},
  language  = {de}
}
@misc{SponagelWachowitz1992,
  author    = {Sponagel, Stefan and Wachowitz, Waldemar},
  title     = {Shaft seal : United States Patent 5,143,385 ; date of patent: Sep. 1, 1992 / assignee: Firma Carl Freudenberg},
  publisher = {[United States Patent and Trademark Office]},
  address   = {[Alexandria, VA]},
  pages     = {5 S. : Ill.},
  year      = {1992},
  language  = {en}
}
@misc{WahlePeter1992,
  author    = {Wahle, Michael and Peter, Roland},
  title     = {Bismaleinimidharze : Offenlegungsschrift / Europ{\"a}ische Patentanmeldung},
  publisher = {Deutsches Patent- und Markenamt / Europ{\"a}isches Patentamt},
  address   = {M{\"u}nchen / Den Hague},
  pages     = {6 S. : graph. Darst.},
  year      = {1992},
  language  = {de}
}