Granted Patent
Utility
US 6,253,927 · App. 09/331,285
Roller screen
Inventors:
Eero Väänänen, Martti Jankkila, Lauri A. Mustikka, Pekka Rantala
Patented Case
View Patent ↗
Granted: Jul 3, 2001
Filed: Aug 23, 1999
Inventors
Eero Väänänen
Martti Jankkila
Lauri A. Mustikka
Pekka Rantala
Assignee (at issue)
Outokumpu Technology Oyj
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.