Granted Patent
Utility
US 5,353,969 · App. 08/135,438
Invertible pump sprayer having spiral vent path
Inventor:
Mark A. Balderrama
Patented Case
View Patent ↗
Granted: Oct 11, 1994
Filed: Oct 13, 1993
Inventor
Mark A. Balderrama
Assignee (at issue)
Calmar Holdings LLC
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.