Granted Patent
Utility
US 4,789,166 · App. 07/095,955
Rotary shaft wave seal
Inventors:
Brian F. Rericha, Bernard G. Stritzke
Patented Case
View Patent ↗
Granted: Dec 6, 1988
Filed: Sep 14, 1987
Inventors
Brian F. Rericha
Bernard G. Stritzke
Assignee (at issue)
Microdot 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.