Granted Patent
Utility
US 6,006,652 · App. 09/182,923
Automotive refrigerant wobble plate type compressor piston with improved ball and socket joint
Inventor:
Yuan Peng
Patented Case
View Patent ↗
Granted: Dec 28, 1999
Filed: Oct 30, 1998
Inventor
Yuan Peng
Assignee (at issue)
General Motors LLC
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.