Granted Patent
Utility
US 4,972,682 · App. 07/370,617
Forced air cooler
Inventors:
Phillip Smith, Robert Allen Johnson, Michael A. Branz
Patented Case
View Patent ↗
Granted: Nov 27, 1990
Filed: Jun 23, 1989
Inventors
Phillip Smith
Robert Allen Johnson
Michael A. Branz
Assignee (at issue)
Specialty Equipment Companies, 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.