Granted Patent
Utility
US 4,166,644 · App. 05/808,560
Pressure-sensitive record material containing urea-formaldehyde resin pigment
Inventors:
Daniel Kay, Rashmikant R. Patel
Patented Case
View Patent ↗
Granted: Sep 4, 1979
Filed: Jun 21, 1977
Inventors
Daniel Kay
Rashmikant R. Patel
Assignee (at issue)
NCR 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.