Granted Patent
Utility
US 4,362,649 · App. 06/247,231
Catalyst composition for body temperature of liquid polythiopolymercaptan polymers for making elastomeric dental impressions
Inventor:
Melvin L. Larson
Patented Case
View Patent ↗
Granted: Dec 7, 1982
Filed: Mar 25, 1981
Inventor
Melvin L. Larson
Assignee (at issue)
Sybron Corporation
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.