Granted Patent
Utility
US 4,835,538 · App. 07/003,642
Three resonator parasitically coupled microstrip antenna array element
Inventors:
Daniel B. McKenna, Todd A. Pett
Patented Case
View Patent ↗
Granted: May 30, 1989
Filed: Jan 15, 1987
Inventors
Daniel B. McKenna
Todd A. Pett
Assignee (at issue)
BALL 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.