Patents by Inventor Peter C. Rao

Peter C. Rao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Drain lock
    Patent number: 6567996
    Abstract: A lock for holding a drain screen in place on the end of a drainpipe has a bolt passing through the screen and screwed into a lateral bore of a cross brace within the drainpipe. The cross brace has an elongated body with a longitudinal bore having left and right threaded rods for easy insertion and the bolt has a non-standard head to thwart removal thereof.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: May 27, 2003
    Inventor: Peter C. Rao
  • DRAIN LOCK
    Publication number: 20030033663
    Abstract: A lock for holding a drain screen in place on the end of a drainpipe has a bolt passing through the screen and screwed into a lateral bore of a cross brace within the drainpipe.
    Type: Application
    Filed: October 9, 2002
    Publication date: February 20, 2003
    Inventor: Peter C. Rao
  • Drain lock
    Publication number: 20020104156
    Abstract: A lock for holding a drain screen in place on the end of a drainpipe has a bolt passing through the screen and screwed into a lateral bore of a cross brace within the drainpipe. The cross brace has an elongated body with a longitudinal bore having left and right threaded rods for easy insertion and the bolt has a non-standard head to thwart removal thereof.
    Type: Application
    Filed: February 8, 2001
    Publication date: August 8, 2002
    Inventor: Peter C. Rao