Granted Patent
Utility
US 4,893,720 · App. 07/312,169
Tilting sanitary tank
Inventors:
Edward McKiernan, Carl E. Bochmann
Patented Case
View Patent ↗
Granted: Jan 16, 1990
Filed: Feb 21, 1989
Inventors
Edward McKiernan
Carl E. Bochmann
Assignee (at issue)
BellandTechnology 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.