Granted Patent
Utility
US 5,883,590 · App. 08/833,081
Analog to digital converter using up/down counter and digital feedback
Inventors:
David Mark Sugden, Andrew Martin Roberts
Patented Case
View Patent ↗
Granted: Mar 16, 1999
Filed: Apr 4, 1997
Inventors
David Mark Sugden
Andrew Martin Roberts
Assignee (at issue)
Switched Reluctance Drives 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.