Granted Patent
Utility
US 4,460,152 · App. 06/450,100
Hand pump with automatic lock-out
Inventors:
David A. DiPasquale, James J. Hammer
Patented Case
View Patent ↗
Granted: Jul 17, 1984
Filed: Dec 15, 1982
Inventors
David A. DiPasquale
James J. Hammer
Assignee (at issue)
Philadelphia Gear 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.