Granted Patent
Utility
US 4,825,334 · App. 06/779,432
High potential brush polarizer
Inventor:
Semyon Kisler
Patented Case
View Patent ↗
Granted: Apr 25, 1989
Filed: Sep 24, 1985
Inventor
Semyon Kisler
Assignee (at issue)
Polaroid Corporation
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.