Granted Patent
Utility
US 4,845,440 · App. 07/174,346
Distributed amplifier circuits
Inventor:
Colin S. Aitchison
Patented Case
View Patent ↗
Granted: Jul 4, 1989
Filed: Mar 28, 1988
Inventor
Colin S. Aitchison
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT 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.