Granted Patent
Utility
US 4,503,530 · App. 06/382,550
Disk hub spindle system
Inventors:
Sigmund Hinlein, Shyam C. Parikh
Patented Case
View Patent ↗
Granted: Mar 5, 1985
Filed: May 27, 1982
Inventors
Sigmund Hinlein
Shyam C. Parikh
Assignee (at issue)
Digital Equipment 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.