Granted Patent
Utility
US 6,202,978 · App. 09/274,328
Removable side wall system for a casting mould
Inventor:
Kari Vappula
Patented Case
View Patent ↗
Granted: Mar 20, 2001
Filed: Mar 23, 1999
Inventor
Kari Vappula
Assignee (at issue)
Addtek Research & Development Oy AB
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.