Granted Patent
Utility
US 4,639,342 · App. 06/823,160
Combined concrete feed and packerhead lift control
Inventor:
Tarek A. Adly
Patented Case
View Patent ↗
Granted: Jan 27, 1987
Filed: Jan 27, 1986
Inventor
Tarek A. Adly
Assignee (at issue)
Hydrotile Machinery 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.