Granted Patent
Utility
US 5,004,190 · App. 07/118,212
Rail heating apparatus
Inventors:
Garry Montierth, Stephen Logan, Raymond J. Scott
Patented Case
View Patent ↗
Granted: Apr 2, 1991
Filed: Nov 6, 1987
Inventors
Garry Montierth
Stephen Logan
Raymond J. Scott
Assignee (at issue)
Bylin Heating Systems, 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.