Soil contact tool
Patent 4185699 Issued on January 29, 1980. Estimated Expiration Date: 
April 7, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 7, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 346064 395573 418389 790746 1099765 1205416 1656133 2779263 3762483 InventorAssigneeApplicationNo. 05/894362 filed on 04/07/1978US Classes:172/724, Wings integral172/705, Spring biased or formed tool or tool part172/732Triangular bladeExaminersPrimary: Stouffer, Richard T.Attorney, Agent or FirmInternational ClassesA01B 35/00 (20060101)A01B 35/20 (20060101) A01C 5/00 (20060101) A01C 5/06 (20060101) AbstractThis invention relates to an improved soil contact tool comprised of a narrow uniform width ground engaging section and a triangular moldboard section extending therefrom. The moldboard section has a center to direct soil away from the mold board with sides being generally concave to insure transverse movement of the soil to create ridges on either side of the ground working tool. | |
