Granted Patent
Utility
US 4,522,774 · App. 06/512,822
Integrated process for the production of textured polycaprolactam multifilament yarn
Inventors:
Edward N. Donnelly, Wilhelm Andreas Haberkorn, Gerry A. Hagen, Thomas McGregor, William Postman
Patented Case
View Patent ↗
Granted: Jun 11, 1985
Filed: Jul 11, 1983
Inventors
Edward N. Donnelly
Wilhelm Andreas Haberkorn
Gerry A. Hagen
Thomas McGregor
William Postman
Assignee (at issue)
Badische 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.