Granted Patent
Utility
US 4,582,653 · App. 06/706,847
Double coil throttle return spring
Inventors:
Terry Blanchard, Albert L. Haas
Patented Case
View Patent ↗
Granted: Apr 15, 1986
Filed: Feb 28, 1985
Inventors
Terry Blanchard
Albert L. Haas
Assignee (at issue)
WALBRO 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.