Granted Patent
Utility
US 4,624,576 · App. 06/749,316
Adjustment of drum mixer trunnions
Inventor:
Bruce A. Dillman
Patented Case
View Patent ↗
Granted: Nov 25, 1986
Filed: Jun 26, 1985
Inventor
Bruce A. Dillman
Assignee (at issue)
Bituma Construction Equipment 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.