patent still


noun
  1. a type of still in which the distillation is continuous

Origin of patent still

1
so called because a still of this type was patented in 1830

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012