Granted Patent
Utility
US 6,047,760 · App. 09/128,751
Lift system for heavy venetian type blinds
Inventor:
Ren Judkins
Patented Case
View Patent ↗
Granted: Apr 11, 2000
Filed: Aug 4, 1998
Inventor
Ren Judkins
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.