Granted Patent
Utility
US 6,183,216 · App. 09/230,145
Arrangement for long-distance conveying of thick matter
Inventor:
Ernst Bachner
Patented Case
View Patent ↗
Granted: Feb 6, 2001
Filed: Jan 19, 1999
Inventor
Ernst Bachner
Assignee (at issue)
PUTZMEISTER INC.
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.