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| Number | Title | Issue Date |
| 4616715 | Forest mattock with braked rotation system A rotation control system for the mattock (2) of a tuft-building forest mattock, whereby rotation of the mattock is adapted to be braked or stopped stepwise in a manner that each pick (3) in turn works a whole in the first stage, in the second stage the p... | 10/14/1986 |
| 4187915 | Soil cultivating implements An implement mounts a row of rotatable members, having resilient tines, that are rotatable about upwardly extending shafts. The members are driven to rotate intermittently by eccentric mechanisms that reciprocate connectors back and forth, the connectors ... | 02/12/1980 |
| 4033416 | Blade means for row crop thinning machine A cutting blade is carried on a shaft rotatable about an axis positioned adjacent a row crop. The blade extends across the longitudinal centerline of the row and cuts plants as the machine moves forward until a sensing means registering on forwardly posit... | 07/05/1977 |
