Granted Patent
Utility
US 5,099,658 · App. 07/611,226
Co-rotational scroll apparatus with optimized coupling
Inventors:
Robert E. Utter, Daniel R. Crum
Patented Case
View Patent ↗
Granted: Mar 31, 1992
Filed: Nov 9, 1990
Inventors
Robert E. Utter
Daniel R. Crum
Assignee (at issue)
American Standard 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.