Granted Patent
Utility
US 4,486,725 · App. 06/410,806
Protective sheath for a waveguide suspended above ground
Inventor:
Charles Peter Majkrzak
Patented Case
View Patent ↗
Granted: Dec 4, 1984
Filed: Aug 23, 1982
Inventor
Charles Peter Majkrzak
Assignee (at issue)
International Telephone and Telegraph Corporation
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.