Granted Patent
Utility
US 4,507,421 · App. 06/572,879
Adhesive containing zinc powder
Inventor:
Detlef Symietz
Patented Case
View Patent ↗
Granted: Mar 26, 1985
Filed: Jan 23, 1984
Inventor
Detlef Symietz
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.