Granted Patent
Utility
US 6,621,377 · App. 09/847,254
Microstrip phase shifter
Inventors:
Vitaly Osadchy, Cornelis F. DuToit, Louise Sengupta, Andrey Kozyrev
Patented Case
View Patent ↗
Granted: Sep 16, 2003
Filed: May 2, 2001
Inventors
Vitaly Osadchy
Cornelis F. DuToit
Louise Sengupta
Andrey Kozyrev
Assignee (at issue)
Paratek Microwave, 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.