Granted Patent
Utility
US 4,651,609 · App. 06/808,511
Device for selectively notching or severing a paper strip
Inventors:
Wilfried Dobring, Wolfgang Rubey, Wolfgang Malke
Patented Case
View Patent ↗
Granted: Mar 24, 1987
Filed: Dec 13, 1985
Inventors
Wilfried Dobring
Wolfgang Rubey
Wolfgang Malke
Assignee (at issue)
Nixdorf Computer 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.