Granted Patent
Utility
US 4,708,650 · App. 06/827,686
Direct delivery system for dental materials
Inventors:
Robert D. Holewinski, William J. Blatherwick, Leslie Hamilton, Thomas E. Wells
Patented Case
View Patent ↗
Granted: Nov 24, 1987
Filed: Feb 10, 1986
Inventors
Robert D. Holewinski
William J. Blatherwick
Leslie Hamilton
Thomas E. Wells
Assignee (at issue)
Johnson & Johnson Dental Products 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.