Granted Patent
Utility
US 4,411,262 · App. 06/336,206
Constructional material
Inventors:
Wulf von Bonin, Ulrich von Gizycki, Kuno Wagner, Dietmar Schapel
Patented Case
View Patent ↗
Granted: Oct 25, 1983
Filed: Dec 31, 1981
Inventors
Wulf von Bonin
Ulrich von Gizycki
Kuno Wagner
Dietmar Schapel
Assignee (at issue)
Bayer Aktiengesellschaft
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.