Granted Patent
Utility
US 4,434,666 · App. 06/137,463
Electromagnetic flowmeters and methods for measuring flow
Inventors:
John Hemp, Yousif A. H. Al-Khazraji
Patented Case
View Patent ↗
Granted: Mar 6, 1984
Filed: Apr 4, 1980
Inventors
John Hemp
Yousif A. H. Al-Khazraji
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.