Granted Patent
Utility
US 5,996,887 · App. 09/172,869
Cup with separable coupon
Inventors:
Liming Cai, Joel B. Corder, Chris T. Bruch
Patented Case
View Patent ↗
Granted: Dec 7, 1999
Filed: Oct 15, 1998
Inventors
Liming Cai
Joel B. Corder
Chris T. Bruch
Assignee (at issue)
Dopaco, Inc.
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.