Granted Patent
Utility
US 4,035,938 · App. 05/683,316
Rotary card holder
Inventor:
Hildaur L. Neilsen
Patented Case
View Patent ↗
Granted: Jul 19, 1977
Filed: May 5, 1976
Inventor
Hildaur L. Neilsen
Assignee (at issue)
Rolodex 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.