John Ehlers was a major stockholder and treasurer of Patent Arms Mfg. Co. when it went bankrupt. He seized the assets and inventory. These revolvers were Pocket Model Patersons that were not finished at the time. Ehlers had them finished and marketed them. They had an attached loading lever and abbreviation "Mfg Co." was deleted from barrel stamping. There were 500 revolvers involved in Ehlers variation totally. They were produced from 1840-1843.