Granted Patent
Utility
US 5,706,973 · App. 08/791,380
Drinking cup and cover with flow control elements
Inventors:
Edward S. Robbins, III, Gregory S. Burcham
Patented Case
View Patent ↗
Granted: Jan 13, 1998
Filed: Jan 30, 1997
Inventors
Edward S. Robbins, III
Gregory S. Burcham
Assignee (at issue)
ES ROBBINS CORPORATION
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.