Marron glacé that a "marron glacé" is a confit marron that is covered in caramel. The 1767 book "L'agronome, ou dictionnaire portatif du cultivateur" claimed that the best marrons came from the Dauphiné region in southeastern France, and contained instructions for preparing marron glacés. Chestnuts are covered with a membrane, known as a pellicle or episperm, which closely adheres to the fruit's flesh and must be removed because of its astringency. Marron nuts have a pellicle which is "superficially attached to the nut", making it easily removable from the fruit. Some chestnuts have two cotyledons usually separated with deep grooves penetrating nearly
Joseph Marron laser radar." Marron also worked for Lockheed Martin and later became a principle research fellow at Raytheon Space and Airborne Systems. On June 19, 2018, Marron was granted patent number 10,000,000 titled "Coherent LADAR Using Intra-Pixel Quadrature Detection" It is for a system to improve laser detection and ranging (LADAR). The patent was also the first to receive the USPTO's redesigned patent cover, specifically unveiled in conjunction with the milestone event. President Donald Trump signed the patent during a special ceremony at the White House. Marron was joined at the event by Secretary of Commerce, Wilbur Ross, USPTO Director Andrei