Granted Patent
Utility
US 4,882,099 · App. 07/275,522
Aeration apparatus havine a deicing mechanism and control circuit therefor
Inventors:
Joseph A. Durda, Thomas Giese
Patented Case
View Patent ↗
Granted: Nov 21, 1989
Filed: Nov 23, 1988
Inventors
Joseph A. Durda
Thomas Giese
Assignee (at issue)
Aeration 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.