Granted Patent
Utility
US 4,268,553 · App. 06/026,065
Method for double glazing units
Inventors:
Taieb Marzouki, Bernd Schweisser
Patented Case
View Patent ↗
Granted: May 19, 1981
Filed: Apr 2, 1979
Inventors
Taieb Marzouki
Bernd Schweisser
Assignee (at issue)
USM Holding AG
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.