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 |
| 5283133 | Magneto-optical disk A magneto-optical disk comprising a substrate, a dielectric film made of aluminum germanium nitride disposed on the substrate and a magnetic film disposed on the dielectric film. The magnetic-optical disk has increased Kerr rotational angle, while having ... | 02/01/1994 |
| 5158834 | Magneto optic recording medium with silicon carbide dielectric A magneto optic recording medium comprising a substrate, an amorphous magnetizable rare earth-transition metal alloy layer, a transparent dielectric layer on at least one side of the magnetizable layer, and a reflective surface located to reflect light th... | 10/27/1992 |
| 5091267 | Magneto-optical recording medium and process for production of the same A magneto-optical recording medium and process for production of the same are disclosed, the magneto-recording medium comprising a substrate having thereon a magneto-optical recording film and at least one coating film provided on a light incident side an... | 02/25/1992 |
| 4832980 | Magneto-optical recording medium and manufacturing thereof According to a disk-shaped magneto-optical recording medium of the invention, a transparent thin film serving as an interference layer is formed on a transparent substrate. The thin film is subjected to a plasma surface treatment, thereby decreasing the f... | 05/23/1989 |
| 4777068 | Optical recording medium In an optical recording medium having an optical recording layer provided on a substrate, a carbide film of a substance selected from among tungsten, boron, molybdenum, hafnium, niobium, titanium, chromium, vanadium, tantalum and silicon is formed on one ... | 10/11/1988 |
| 4719154 | Magneto-optic recording element with amorphous aluminum-nitrogen alloy layer Disclosed herein is a novel magneto-optical recording element comprising an alloy thin film of aluminum and nitrogen, such film being contiguous with a magneto-optic recording layer. The Al1-x -Nx alloy is distinct from the stoichiom... | 01/12/1988 |
| 4711821 | Opto-magnetic recording medium An opto-magnetic recording medium comprises a transparent plastic substrate, a magnetic recording layer provided on the plastic substrate, and two or more thin film layers provided between the plastic substrate and the magnetic recording layer and decreas... | 12/08/1987 |