Granted Patent
Utility
US 4,299,508 · App. 06/129,391
Connectors for the construction of hollow tube mounting frameworks
Inventors:
Franz Kerscher, Guenther Schaffer
Patented Case
View Patent ↗
Granted: Nov 10, 1981
Filed: Mar 11, 1980
Inventors
Franz Kerscher
Guenther Schaffer
Assignee (at issue)
Siemens Aktiengesellschaft
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.