Granted Patent
Utility
US 5,227,414 · App. 07/876,059
Aqueous urethane-epoxy coating composition
Inventors:
G. Dale Ernst, Joseph S. Keute, Alan R. Schuweiler
Patented Case
View Patent ↗
Granted: Jul 13, 1993
Filed: Apr 29, 1992
Inventors
G. Dale Ernst
Joseph S. Keute
Alan R. Schuweiler
Assignee (at issue)
TENNANT COMPANY
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.