Granted Patent
Utility
US 4,706,852 · App. 06/871,727
Inlet sleeve for hot-melt dispensers
Inventors:
Willi Borst, Reinhard Pfisterer
Patented Case
View Patent ↗
Granted: Nov 17, 1987
Filed: Jun 6, 1986
Inventors
Willi Borst
Reinhard Pfisterer
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.