Granted Patent
Utility
US 4,506,617 · App. 06/438,056
Ship
Inventors:
Heinrich Waas, Ayres Freitas, Jurgen M. Schultz, Gunter Varges
Patented Case
View Patent ↗
Granted: Mar 26, 1985
Filed: Nov 1, 1982
Inventors
Heinrich Waas
Ayres Freitas
Jurgen M. Schultz
Gunter Varges
Assignee (at issue)
Thyssen Nordseewerke GmbH
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.