Granted Patent
Utility
US 4,303,598 · App. 06/164,807
Vacuum control assembly
Inventor:
Larry A. Neighbor
Patented Case
View Patent ↗
Granted: Dec 1, 1981
Filed: Jun 30, 1980
Inventor
Larry A. Neighbor
Assignee (at issue)
BLD Products, Ltd
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.