Granted Patent
Utility
US 5,248,248 · App. 07/943,758
Machine for making concrete pipes
Inventor:
Tarek A. Adly
Patented Case
View Patent ↗
Granted: Sep 28, 1993
Filed: Sep 11, 1992
Inventor
Tarek A. Adly
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.