Granted Patent
Utility
US 5,205,174 · App. 07/705,687
Scavenger submersible visual and acoustical tank inspection system and method
Inventors:
Eugene B. Silverman, Seymour R. Kotler, Harry T. Roman
Patented Case
View Patent ↗
Granted: Apr 27, 1993
Filed: May 24, 1991
Inventors
Eugene B. Silverman
Seymour R. Kotler
Harry T. Roman
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.