Granted Patent
Utility
US 4,424,787 · App. 06/408,374
Encapsulated PTC heater for cold-start carburetor
Inventor:
Edward Fitz
Patented Case
View Patent ↗
Granted: Jan 10, 1984
Filed: Aug 16, 1982
Inventor
Edward Fitz
Assignee (at issue)
Sun Chemical 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.