Granted Patent
Utility
US 5,230,776 · App. 07/914,199
Paper machine for manufacturing a soft crepe paper web
Inventors:
Ingmar Andersson, Cai O. Hellner
Patented Case
View Patent ↗
Granted: Jul 27, 1993
Filed: Jul 14, 1992
Inventors
Ingmar Andersson
Cai O. Hellner
Assignee (at issue)
Valmet Paper Machinery Inc.
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.