Granted Patent
Utility
US 4,404,875 · App. 06/399,402
Installer drive unit for chemical anchor
Inventors:
Kunissey P. Sadanandan, Raymond S. Guntulis
Patented Case
View Patent ↗
Granted: Sep 20, 1983
Filed: Jul 19, 1982
Inventors
Kunissey P. Sadanandan
Raymond S. Guntulis
Assignee (at issue)
USM Holding AG
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.