Patents by Inventor Philippe Roulin

Philippe Roulin 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).

  • Telescopically extensible bracelet clasp
    Patent number: 5105510
    Abstract: The clasp (1) is telescopically extensible. It includes a first tubular element (2) capped on its upper and lateral faces by a plurality of links (5) resembling those employed for the rest of the bracelet. Into the first element there may be introduced a second tubular element (8) which in turn is adapted to accommodate a third element (10) in the form of a plate to which is attached a blocking system in order to maintain the clasp in its retracted position. The clasp is for a bracelet and shows no greater thickness relative to the links forming said bracelet.
    Type: Grant
    Filed: July 11, 1991
    Date of Patent: April 21, 1992
    Assignee: Montres Rado S.A.
    Inventors: Philippe Roulin, Roland Streule, Pierre-Alain Walder