Granted Patent
Utility
US 5,487,025 · App. 08/152,561
Carry chain adder using regenerative push-pull differential logic
Inventors:
Hamid Partovi, Donald A. Draper
Patented Case
View Patent ↗
Granted: Jan 23, 1996
Filed: Nov 15, 1993
Inventors
Hamid Partovi
Donald A. Draper
Assignee (at issue)
Intergraph 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.