Granted Patent
Utility
US 6,071,040 · App. 09/165,226
Additive injection device for paving machines
Inventors:
Charles G. Macku, John A. Trygg, William Barth Burgett
Patented Case
View Patent ↗
Granted: Jun 6, 2000
Filed: Oct 1, 1998
Inventors
Charles G. Macku
John A. Trygg
William Barth Burgett
Assignee (at issue)
Cedarapids, 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.