Granted Patent
Utility
US 5,538,360 · App. 07/844,825
Crest gate operating system
Inventor:
Henry K. Obermeyer
Patented Case
View Patent ↗
Granted: Jul 23, 1996
Filed: Mar 2, 1992
Inventor
Henry K. Obermeyer
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.