Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4559861 | Musical teaching device for expediting musical instruction A musical teaching device, which substantially shortens the amount of time which a student requires in order to understand various aspects of playing a stringed instrument, is described. This device is comprised of a grid of intersecting lines which repre... | 12/24/1985 |
| 4417497 | Stringed musical instrument teaching device and process A teaching device for stringed musical instruments used by a player thereof to identify, practice and make changes between notes of scales of different keys. It is constructed of a simulated fingerboard comprising a rigid support surface (56) with magneti... | 11/29/1983 |
| 4412473 | Calculator for guitar chords An electronic device in the nature of a hand-held calculator, for illustrating on the display area required string and fret positions of a fretted stringed instrument to be fingered to play the notes making up a particular chord. The device comprises a se... | 11/01/1983 |
| 4364298 | Stringed simulator A stringed simulator 10 is provided which is portable, compact and produces low sound levels. The simulator 10 enables a player to practice both right and left hand fingering which closely simulates practice on a corresponding full-size instrument. The si... | 12/21/1982 |
| 4314499 | Musical instruments facilitating teaching, composing and improvisation An equal input output learning device that can be added to or built into any musical instrument facilitating the teaching and improvisation of music and muscial theory using the musical instrument itself which device consists of a plurality of 12 switches... | 02/09/1982 |
| 4295406 | Note translation device The specification describes a note translation device for translating the notes in printed music to finger numbers, string numbers and fingerboard locations for playing the notes on a guitar. An array of note input switches on the front panel are arranged... | 10/20/1981 |
| 4286495 | Musical instrument training device An electrical device is disclosed herein for training a student to play a string instrument which includes a first group of visual indicators mounted on the neck of a fret board and each indicator being immediately beneath and in registry with a particula... | 09/01/1981 |
| 4257306 | Electronic display device for fretted stringed instruments A small lightweight electronic device to indicate the finger positions of a fretted stringed instrument represented by the musical intervals or chords in any key. The device has a series of on-off switches representing each of the desired musical keys and... | 03/24/1981 |
| 4204454 | Instructional apparatus for stringed instrument The present invention provides a keyboard adapted to be secured over the neck of a stringed instrument. The keyboard comprises a platform which supports a plurality of depressible plungers or keys aligned in rows and positioned directly above the strings ... | 05/27/1980 |
| 4203345 | Automatic visual teaching device for the learning of music or component parts thereof An automatic visual music teaching device for displaying the structure of coded chords. The device comprises a plurality of actuable switches for selecting a desired coded chord. Signals associated with the actuated switches are temporarily stored and are... | 05/20/1980 |
| 4170917 | Mirror accessory means for stringed musical instrument In one embodiment a musical instrument, having a plurality of strings, a plurality of frets situated transverse to the strings and playable as with a cylindrical steel bar member slidably positionable along and against said strings, has an elongated mirro... | 10/16/1979 |
| 4129058 | Musical instrument teaching aid A musical instrument teaching aid for teaching the fingerings of a recorder. The teaching aid providing a plurality of dowels each having depressions therein for representing the fingering of only one particular musical note played on the recorder.... | 12/12/1978 |
| 4095506 | Position indicator for guitars This invention is directed to a position indicator which is mounted along one margin of a set of strings of a musical instrument and includes a set of projections so arranged that, when engaged by a slide bar placed across the strings, a preselected chord... | 06/20/1978 |
| 4080867 | Electronic display system for musical instruments There is disclosed herein an electronic digital system for allowing encoding and storage of note value and time value for one or more musical instruments and which, upon playback, controls a light display to indicate to the musician the notes to be played... | 03/28/1978 |
| 4041828 | Chord fingering coordinator The invention is a teaching and practicing aid for music students which graphically displays the relationship of the dominant, tonic, and subdominant scales in a particular key signature and as they relate to the diatonic scale in that key signature, the ... | 08/16/1977 |
| 4031801 | Stringed musical instrument A stringed musical device for teaching purposes in which a longitudinally extending member having dimensions similar to a guitar neck is provided with a head extending away therefrom with six machine heads mounted thereon for maintaining tension in the as... | 06/28/1977 |
| 3978757 | Instructional display device operated responsive to the playing of stringed musical instruments Separate areas of a display board are selectively activated either separately or in various combinations to illustrate a chord diagram, a fingerboard diagram, and/or a musical staff diagram. Lamps in each of the three diagrams are illuminated responsive t... | 09/07/1976 |
| 3978756 | Guitar instruction system An instruction system for a string instrument such as a guitar comprising note indicia underlying the strings of the guitar along the fingerboard and adjacent to the frets, a music sheet containing the musical exercise to be practiced, a holder for suppor... | 09/07/1976 |
