Granted Patent
Utility
US 6,135,515 · App. 09/397,974
Multi-directional self-aligning shear type electromagnetic lock
Inventors:
Thomas Roth, Vincent J. Frallicciardi
Patented Case
View Patent ↗
Granted: Oct 24, 2000
Filed: Sep 16, 1999
Inventors
Thomas Roth
Vincent J. Frallicciardi
Assignee (at issue)
Securitron Magnalock 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.