Granted Patent
Utility
US 4,781,510 · App. 06/786,784
Insulation board feeder
Inventors:
Harvell M. Smith, Robert R. Coleman
Patented Case
View Patent ↗
Granted: Nov 1, 1988
Filed: Oct 11, 1985
Inventors
Harvell M. Smith
Robert R. Coleman
Assignee (at issue)
Manville Service 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.