Granted Patent
Utility
US 4,768,060 · App. 07/022,246
Push-pull liquid development method and apparatus
Inventors:
Benzion Landa, Yakov Krumberg
Patented Case
View Patent ↗
Granted: Aug 30, 1988
Filed: Mar 5, 1987
Inventors
Benzion Landa
Yakov Krumberg
Assignee (at issue)
Savin 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.