Granted Patent
Utility
US 4,505,752 · App. 06/522,074
Fast-setting cements from solid phosphorus pentoxide containing materials
Inventors:
Fawzy G. Sherif, Edwin S. Michaels
Patented Case
View Patent ↗
Granted: Mar 19, 1985
Filed: Aug 11, 1983
Inventors
Fawzy G. Sherif
Edwin S. Michaels
Assignee (at issue)
Stauffer Chemical 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.