Granted Patent
Utility
US 6,476,509 · App. 09/838,648
Mobile AC power system
Inventors:
John Chen, Michael D. Ballard, Jinghui Sun
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Apr 19, 2001
Inventors
John Chen
Michael D. Ballard
Jinghui Sun
Assignee (at issue)
Unit Parts Company
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.