Granted Patent
Utility
US 5,183,640 · App. 07/751,151
Apparatus for producing rubber mixtures
Inventors:
Julius Peter, Gunter Weckerle
Patented Case
View Patent ↗
Granted: Feb 2, 1993
Filed: Aug 28, 1991
Inventors
Julius Peter
Gunter Weckerle
Assignees (at issue)
Continental AG
Julius Peter
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.