Granted Patent
Utility
US 4,688,810 · App. 06/850,556
Support for a chuck
Inventor:
Carlson A. Waite
Patented Case
View Patent ↗
Granted: Aug 25, 1987
Filed: Apr 15, 1986
Inventor
Carlson A. Waite
Assignee (at issue)
Sheffer Collet 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.