Granted Patent
Utility
US 5,259,693 · App. 07/847,648
Method and apparatus for heating an asphalt paving screed
Inventor:
Larry Raymond
Patented Case
View Patent ↗
Granted: Nov 9, 1993
Filed: Mar 6, 1992
Inventor
Larry Raymond
Assignee (at issue)
Carlson Paving Products, 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.