Granted Patent
Utility
US 4,881,244 · App. 07/131,746
Transmission-reception equipment for a bus system
Inventor:
Friedrich Haug
Patented Case
View Patent ↗
Granted: Nov 14, 1989
Filed: Dec 11, 1987
Inventor
Friedrich Haug
Assignee (at issue)
Siemens Aktiengesellschaft
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.