Granted Patent
Utility
US 4,752,155 · App. 07/009,360
Paving machine having movable heater
Inventor:
John Rennich
Patented Case
View Patent ↗
Granted: Jun 21, 1988
Filed: Jan 31, 1987
Inventor
John Rennich
Assignee (at issue)
Roadtec, 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.