Granted Patent
Utility
US 5,854,608 · App. 08/351,631
Helical antenna having a solid dielectric core
Inventor:
Oliver Paul Leisten
Patented Case
View Patent ↗
Granted: Dec 29, 1998
Filed: Dec 6, 1994
Inventor
Oliver Paul Leisten
Assignee (at issue)
Symetri Com, 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.