Granted Patent
Utility
US 4,661,062 · App. 06/776,431
Dental handpiece contra-angle head
Inventor:
Michel Seigneurin
Patented Case
View Patent ↗
Granted: Apr 28, 1987
Filed: Sep 16, 1985
Inventor
Michel Seigneurin
Assignee (at issue)
Micro Mega, S.A.
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.