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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 |
| 5253848 | Valve for molten metal conduit A device for stopping flow of molten metal through a conduit having a longitudinal central passage. A ceramic seal is placed through a wall of a ceramic pipe for preventing flow of the molten metal through the opening in the wall of the ceramic pipe. A no... | 10/19/1993 |
| 5071340 | Cooling arrangement for valve stem gates in hot runner injection molding machine systems An injection molding machine and method in which a hot runner has heated nozzles and piston operated nozzles valves, the stems of the nozzle valves and the nozzle bushings have passages connected to the cylinders to carry cooling fluid to the cylinders to... | 12/10/1991 |
| 4060122 | Low-pressure die casting machine A low pressure die casting machine for light alloys, of the type in which a charge of molten alloy is received in a charging chamber which is then closed and pressurized to drive the molten alloy into a die chamber formed by a plurality of separable die e... | 11/29/1977 |
