Patents by Inventor Jean L. Chandesais

Jean L. Chandesais 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).

  • Ring lighting for microscopes
    Patent number: 4351584
    Abstract: Improved ring lighting for microscopes, characterized in that it comprises substantially the combination of a light source remote from the precious stone being examined, a glass fiber guide extending to an annular end-piece and a reflector secured on the latter.
    Type: Grant
    Filed: March 31, 1980
    Date of Patent: September 28, 1982
    Inventor: Jean L. Chandesais