Granted Patent
Utility
US 6,146,120 · App. 09/124,608
Rotary engine having an improved rotor structure
Inventor:
Rod Harms
Patented Case
View Patent ↗
Granted: Nov 14, 2000
Filed: Jul 29, 1998
Inventor
Rod Harms
Assignee (at issue)
Jenn Feng Industrial Co., Ltd.
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.