Agricultural patents (1.5.2.1 SCHACHE)

Patent 1181/16 (2 June 1916, drills and scarifiers).
“Australian Official Journal of Patents”, Tuesday 24 October 1016, page 1017.
“Australian Official Journal of Patents”, Tuesday 24 October 1016, page 1027 (extract from “Illustrated Notes”);an illustration also appeared on the previous page).
“Dunmunkle Standard” (Murtoa, Vic.), Friday 2 November 1917, page 3 (extract from article “Murtoa Show”) [Trove].
Patent 14870/20 (24 March 1920, stump-jump scarifiers).
Patent attorney correspondence, 1927.