Granted Patent
Utility
US 5,112,207 · App. 07/680,291
Self-releasing mold
Inventor:
Alec Pinsonneault
Patented Case
View Patent ↗
Granted: May 12, 1992
Filed: Apr 4, 1991
Inventor
Alec Pinsonneault
Assignee (at issue)
Build A Mold Limited
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.