...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 |
| 7285713 | Stringed musical instrument equipped with sensors sensitive to vibration components and bridge with built-in sensors An electric acoustic stringed musical instrument is a combination between an acoustic stringed musical instrument and an electric system; while a player is bowing on the strings, the strings not only laterally vibrate but also are repeatedly elongated and shrunk so ... | 10/23/2007 |
| 7138577 | Stringed musical instrument equipped with pickup embedded in bridge and bridge used therein An electric acoustic violin is a combination of an acoustic violin and an electric system, and the electric system includes a pickup unit for converting the vibrations of the strings to an electric signal; and a hollow space is formed in the bridge for receiving the... | 11/21/2006 |
| 4545277 | Sound attachment for a reed instrument A sound attachment for a reed instrument such as a harmonica. A housing is provided having an open end adapted for attachment to the instrument, covering the full width of the portion of the instrument from which sound is emitted, and a closed opposite en... | 10/08/1985 |
| 4433602 | Keyboard musical instrument A portable electric keyboard musical instrument is disclosed which includes a plurality of sound producing elements with each fixedly attached to the supporting structure, and a plurality of actions for selectively causing respective elements to vibrate. ... | 02/28/1984 |
| 4373418 | Tuning fork mounting assembly in electromechanical pianos An electromechanical piano of the type incorporating asymmetrical tuning forks. To increase vastly the dwell of the forks in the high-pitched range of the piano, a fork-mounting construction is employed wherein only a single screw is associated with each ... | 02/15/1983 |
| 4314494 | Electric keyboard musical instrument A portable electric keyboard musical instrument is disclosed which includes (1) a two-part folding supporting structure, (2) a plurality of vibratile reeds with each having an end fixedly attached to the supporting structure, and (3) a plurality of action... | 02/09/1982 |
| 4175461 | Electromagnetic pickup device An electromagnetic pickup device for use in a tone generator of an electronic piano includes a plurality of vibratory reeds and pole pieces of pickups which are so shaped that each reed and pole piece are opposed to each other in a range from the neutral ... | 11/27/1979 |
| 4040321 | Electromagnetic pickup and method for tine-type electric piano, and piano incorporating such pickup The present electromagnetic pickup and method, and the piano incorporating the pickup, make use of a protuberant magnetic pole piece portion which is so constructed and related that (a) the lines of magnetic force loop back therefrom, and (b) the concentr... | 08/09/1977 |