Granted Patent
Utility
US 4,908,532 · App. 07/195,640
Quadrature signals generator
Inventor:
Peter Edward Chadwick
Patented Case
View Patent ↗
Granted: Mar 13, 1990
Filed: Jul 8, 1988
Inventor
Peter Edward Chadwick
Assignee (at issue)
Plessey Overseas 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.