Granted Patent
Utility
US 4,357,007 · App. 06/143,383
Singler device
Inventors:
Willy A. Mens Franciscus, Ludovicus Van Dorst
Patented Case
View Patent ↗
Granted: Nov 2, 1982
Filed: Apr 24, 1980
Inventors
Willy A. Mens Franciscus
Ludovicus Van Dorst
Assignee (at issue)
International Standard Electric 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.