Granted Patent
Utility
US 6,152,666 · App. 09/268,790
Screw for use as a fastener in fibrous material such as wood
Inventors:
Uli Walther, Mirco Walther, Thorsten Walther
Patented Case
View Patent ↗
Granted: Nov 28, 2000
Filed: Mar 16, 1999
Inventors
Uli Walther
Mirco Walther
Thorsten Walther
Assignees (at issue)
Uli Walther
Gerda Walther
Mirco Walther
Thorsten Walther
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.