Granted Patent
Utility
US 5,545,358 · App. 08/425,930
Tank cover structure with aeration distribution
Inventors:
Jeffrey A. Hallsten, Elena Bailey
Patented Case
View Patent ↗
Granted: Aug 13, 1996
Filed: Apr 20, 1995
Inventors
Jeffrey A. Hallsten
Elena Bailey
Assignees (at issue)
Hallsten Corporation
Enviroquip 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.