United State Patent 4,730,597: Biomass Stove (Hottenroth, 1988) [PRS88001]Resource Item Hottenroth, 1988, PRS88001United State Patent 4,730,597: Biomass Stove Resource Last Updated: 15 March 1988 25 January 2016 tagged Fred W. Hottenroth / Household Cookstoves / Publications / United States Patent / Hottenroth (Fred W.) / English / PR - Paper or Book (ex. Adobe PDF or MS Word DOCX File) by admin