Granted Patent
Utility
US 5,772,753 · App. 08/754,954
Cement accelerators
Inventor:
Salvatore Valenti
Patented Case
View Patent ↗
Granted: Jun 30, 1998
Filed: Nov 21, 1996
Inventor
Salvatore Valenti
Assignee (at issue)
MBT Holding AG
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.