Granted Patent
Utility
US 5,713,699 · App. 08/490,643
Spillway crest gate system and inflatable bladder therefor
Inventors:
Henry K. Obermeyer, Robert D. Eckman
Patented Case
View Patent ↗
Granted: Feb 3, 1998
Filed: Jun 15, 1995
Inventors
Henry K. Obermeyer
Robert D. Eckman
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.