Granted Patent
Utility
US 4,600,522 · App. 06/371,625
Detergent cleaning composition
Inventors:
John A. Grzeskowiak, Jr., Elliott E. Hershkowitz
Patented Case
View Patent ↗
Granted: Jul 15, 1986
Filed: Apr 26, 1982
Inventors
John A. Grzeskowiak, Jr.
Elliott E. Hershkowitz
Assignee (at issue)
AT&T Technologies Incorporated
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.