IP Library Granted Patent US 5,611,243
Granted Patent Utility
US 5,611,243 · App. 08/239,959

Piston advance mechanism for automatic taper

Inventor: Donald M. MacMillan
Patented Case View Patent ↗
Granted: Mar 18, 1997 Filed: May 9, 1994
Inventor
Donald M. MacMillan

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.

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Quick Facts
Patent No.
US 5,611,243
App. No.
08/239,959
Filed
1994-05-09
Granted
1997-03-18
Kind
A