Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of NL131756CpublicationCriticalpatent/NL131756C/xx
Priority claimed from NL6703867Aexternal-prioritypatent/NL6703867A/xx
A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
A01B19/00—Harrows with non-rotating tools
A01B19/02—Harrows with non-rotating tools with tools rigidly or elastically attached to a tool-frame
A01B19/06—Harrows with non-rotating tools with tools rigidly or elastically attached to a tool-frame with tools or tool-frames moved to-and-fro mechanically