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Lawrence Welk, the bandleader who entertained millions of Americans over a generation of broadcasting his TV show, once received a patent: for a music-themed design of an ashtray.
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| Number | Title | Issue Date |
| 6752220 | Farm equipment hitch A farm equipment hitch comprises a hitch frame, a lift linkage, a lift cradle, a ram and a plurality of locking mechanisms. ... | 06/22/2004 |
| 6202756 | Forwardly folding agricultural planter An agricultural planter is provided with hydraulically operated devices to effect the folding and unfolding of the planter support structure between operative and transport configurations. The planter includes a telescopic hitch apparatus that lengthens a... | 03/20/2001 |
| 6192994 | Lift assist mechanism for a forwardly folding planting implement An agricultural implement, having a tool bar that is pivoted forwardly to initiate the conversion of the implement from a working position toward a transport position, including left and right wing members extending in opposing directions to respective di... | 02/27/2001 |
| 6125775 | System for gauge wheel load adjustment A system for ensuring the uniform height of gauge wheels for a towed implement assembly such as a seeder. The seeder has a frame structure with a series of front gauge wheels suspended by the front of the frame structure. A greater number of rear wheels a... | 10/03/2000 |
| 5590721 | Conservation tillage tool A conservation tillage tool, including a main frame and a rear frame pivotally mounted on the main frame disposed to support a number of soil working implements in sequence. The main frame is supported by ground wheels attached to the rear section of the ... | 01/07/1997 |
| 5191942 | Agricultural frame for propulsion of ground working implements An agricultural frame particularly for transporting active harrow elements and packer elements comprises a central frame section and a pair of wing frames projecting outwardly to the side of the central frame section at right angles thereto. The whole of ... | 03/09/1993 |
| 5129463 | Conservation tillage implement convertible for end transport A large tillage implement provided with hinging wing sections is adapted for end towing rather than wing-up folding transport. The hitch which is normally centered at the front of the machine may be swung into a folded condition parallel with the longitud... | 07/14/1992 |
| 4131162 | Earth working apparatus An earth working apparatus comprising a main frame having a hitch for detachably connecting the apparatus to a prime mover, a first ground working implement mounted on the main frame, a pair of support arms operatively connected at forwardly disposed ends... | 12/26/1978 |
