Granted Patent
Utility
US 4,646,175 · App. 06/597,012
Method and apparatus for positioning transducers by digital conversion of analog-type signals
Inventors:
Edmund L. Sokolik, Francis Lum
Patented Case
View Patent ↗
Granted: Feb 24, 1987
Filed: Apr 5, 1984
Inventors
Edmund L. Sokolik
Francis Lum
Assignee (at issue)
Irwin Magnetic Systems, Inc.
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.