Granted Patent
Utility
US 4,432,153 · App. 06/382,624
Cup with detachable bottom
Inventors:
Gilbert Bachman, Byrne E. Heninger
Patented Case
View Patent ↗
Granted: Feb 21, 1984
Filed: May 27, 1982
Inventors
Gilbert Bachman
Byrne E. Heninger
Assignee (at issue)
Dittler Brothers Incorporated
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.