Granted Patent
Utility
US 6,424,316 · App. 09/684,280
Helical antenna
Inventor:
Oliver Paul Leisten
Patented Case
View Patent ↗
Granted: Jul 23, 2002
Filed: Oct 6, 2000
Inventor
Oliver Paul Leisten
Assignee (at issue)
Sarantel Limited
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.