Granted Patent
Utility
US 4,557,376 · App. 06/501,209
Self activating amalgam capsule
Inventors:
Robert L. Probst, William A. Groves
Patented Case
View Patent ↗
Granted: Dec 10, 1985
Filed: Jun 6, 1983
Inventors
Robert L. Probst
William A. Groves
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.