Granted Patent
Utility
US 4,236,472 · App. 05/883,584
Sewing machine material preassembly system
Inventors:
John L. Rockerath, Harold J. Schreck
Patented Case
View Patent ↗
Granted: Dec 2, 1980
Filed: Mar 6, 1978
Inventors
John L. Rockerath
Harold J. Schreck
Assignee (at issue)
Cluett, Peabody & Co., Inc.
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.