Patents by Inventor Michael R. McGrath

Michael R. McGrath 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).

  • Safety container
    Patent number: 5265751
    Abstract: A safety container having an array of ratchet teeth cooperating with a pawl stop is provided. The cover of the container can only be removed by counterclockwise rotation while the pawl is urged out of engagement with the ratchet teeth.
    Type: Grant
    Filed: April 24, 1992
    Date of Patent: November 30, 1993
    Assignee: Russel-Stanley Corporation
    Inventors: William Lima, Earl V. Lind, Philip D. Bartlett, Michael R. McGrath
  • Safety container
    Patent number: 5147060
    Abstract: A safety container having an array of ratchet teeth cooperating with a pawl stop is provided. The cover of the container can only be removed by counterclockwise rotation while the pawl is urged out of engagement with the ratchet teeth.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: September 15, 1992
    Assignee: Russell-Stanley Corporation
    Inventors: William Lima, Earl V. Lind, Philip D. Bartlett, Michael R. McGrath