Diagrams of the VeriThin and Ultra-VeriThin WatchesIntroduced in 1904, Gruen’s VeriThin (also spelled Verithin) was about one-third thinner than conventional movements. It became one of the…
Gruen Watches AdvertisementMarketing the Gruen image was an important part of Frederick Gruen’s leadership of the company. In 1911, he hired the…
Gruen, Dietrich, PatentDuring his time as a watch repairman in Delaware, Ohio, Dietrich Gruen developed an improved center pinion for watches. Gruen’s…
