Granted Patent
Utility
US 5,837,924 · App. 08/561,615
Signal transmission tube using reclaim material and method of manufacture
Inventor:
Dennis K. Austin
Patented Case
View Patent ↗
Granted: Nov 17, 1998
Filed: Nov 21, 1995
Inventor
Dennis K. Austin
Assignee (at issue)
The Ensign-Bickford Company
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.