Patents by Inventor Sam L. Currier

Sam L. Currier 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 device and method of establishing group communication
    Patent number: 4833452
    Abstract: An electronic two way signalling apparatus for permitting two or more persons not in line-of-sight with each other to activate transceivers for broadcasting and receiving radio frequency signals alerting those persons of the presence of others within the range of the broadcast signals. The apparatus carried by such persons provides a fixed outgoing radio frequency signal on a random broadcast time of short duration and reception of incoming radio frequency signals at time when a broadcast is silent, and each such apparatus is identical in operation.
    Type: Grant
    Filed: May 4, 1987
    Date of Patent: May 23, 1989
    Assignee: Sam L. Currier
    Inventor: Sam L. Currier