Patents by Inventor Francois Bonsack

Francois Bonsack 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).

  • Escapement for a timepiece
    Patent number: 4041693
    Abstract: This invention refers to a high efficiency escapement wherein the pallets embrace more than one fifth of the teeth of the pallets wheel, and wherein the entry-pallet embraces relative to the line joining the center of the escape wheel to the pallet staff at least one tooth more of said wheel than the exit-pallet relative to said joining line.
    Type: Grant
    Filed: September 19, 1975
    Date of Patent: August 16, 1977
    Assignee: Les Fabriques d'Assortiments Reunies
    Inventor: Francois Bonsack