Granted Patent
Utility
US 4,242,573 · App. 06/006,188
Water immersible heater
Inventor:
Neville S. Batliwalla
Patented Case
View Patent ↗
Granted: Dec 30, 1980
Filed: Jan 24, 1979
Inventor
Neville S. Batliwalla
Assignee (at issue)
Raychem Limited
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.