...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 6686686 | Bi-potential electrode space-saving cathode ray tube A plural-beam cathode ray tube includes an electron gun directing electrons towards a faceplate having an electrode biased at screen potential. The electron beam is magnetically deflected to scan across the faceplate to impinge upon a pattern of phosphors... | 02/03/2004 |
| 6674230 | Asymmetric space-saving cathode ray tube with magnetically deflected electron beam A cathode ray tube includes an electron gun directing electrons away from a faceplate having an electrode biased at screen potential. One or more electromagnets located on or near the rear wall of the tube envelope are biased with dc currents so that the ... | 01/06/2004 |
| 6670745 | Cathode ray tube deflection yoke A cathode ray tube deflection yoke is provided wherein the deflection yoke includes a plurality of deflection coils. One or more of the deflection coils have a non-constant distribution of turns, whereby an electron beam passing through the deflection yok... | 12/30/2003 |
| 6603252 | Space-saving cathode ray tube A cathode ray tube includes an electron gun directing electrons towards a faceplate having an electrode biased at screen potential. The electron beam is magnetically deflected to scan across the faceplate to impinge upon phosphors thereon to produce light... | 08/05/2003 |
| 6586870 | Space-saving cathode ray tube employing magnetically amplified deflection A cathode ray tube includes an electron gun directing electrons towards a faceplate having an electrode biased at screen potential. The electron beam (three beams in a color tube) is magnetically deflected to scan across the faceplate to impinge upon phos... | 07/01/2003 |
| 6541902 | Space-saving cathode ray tube A cathode ray tube includes an electron gun directing electrons towards a faceplate having an electrode biased at screen potential. The electron beam is magnetically deflected to scan across the faceplate to impinge upon phosphors thereon to produce light... | 04/01/2003 |
| 6476545 | Asymmetric, gradient-potential, space-savings cathode ray tube A cathode ray tube includes an electron gun directing electrons away from a faceplate having an electrode biased at screen potential. A plurality of electrodes located on or near the rear wall of the tube envelope are biased at graduated potentials so tha... | 11/05/2002 |