Granted Patent
Utility
US 6,151,448 · App. 09/239,837
Electric heater for a livestock water tank
Inventors:
Thomas K. Reusche, Donald B. Owen
Patented Case
View Patent ↗
Granted: Nov 21, 2000
Filed: Jan 29, 1999
Inventors
Thomas K. Reusche
Donald B. Owen
Assignee (at issue)
Allied Precision Industries Inc.
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.