Granted Patent
Utility
US 4,752,015 · App. 07/043,142
Attachment for tubes
Inventor:
Clemens Schumacher
Patented Case
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Granted: Jun 21, 1988
Filed: Apr 27, 1987
Inventor
Clemens Schumacher
Assignee (at issue)
Robert Finke Kommanditgesellschaft
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.