The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
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| Number | Title | Issue Date |
| 6948868 | Keyboard structure A word transcription keyboard utilizing at least one keypad which is available for access by a finger of the user. A second keypad accessible to the finger of the user is extended and terminated in a press pad for allowing contact of the palm region of the hand simu... | 09/27/2005 |
| 6315472 | Ergonomic keyboard device An ergonomic keyboard assembly arranged for providing input to an existing keyboard device having a plurality of keys that are moveable relative to a frame. The ergonomic keyboard comprises means for attaching the ergonomic keyboard assembly to the existi... | 11/13/2001 |
| 5664896 | Speed typing apparatus and method A speed typing method and apparatus having multiple letters associated with each key of a keyboard. By utilizing multiple characters on each key, fewer than 26 letter keys may be employed. Each key on the keyboard is associated with a numerical code. The ... | 09/09/1997 |
| 5466072 | Method and apparatus for recording and translating shorthand notes A look-up table based on a conventional binary tree is implemented within a shorthand machine that performs sophisticated computer aided translations without compromising portability and long-term battery powered operation. The novel look-up table stores ... | 11/14/1995 |
| 5288158 | One handed-keyboard A one-handed keyboard comprising a plurality of keys representing one half of a standard keyboard, apparatus for assigning a pair of characters to each key of the plurality of keys, one of the characters being normally associated with the key in a standar... | 02/22/1994 |
| 5280430 | Computer-aided transcription system providing individualized electonic marking of stenographic records A system for providing a textual record of spoken words. The textual record having reference markings selectively provided by a plurality of system users. Keystrokes are inputed under the control of a first user which are representative of spoken words, t... | 01/18/1994 |
| 5217311 | Accordion style typing machine and keyboard therefor A stenotype machine has a casing with a rear panel and a front panel. The casing is substantially symmetrical with respect to a plane bisecting and perpendicular to the rear and front panels. The casing further has a top panel intersecting the front panel... | 06/08/1993 |
| 5203635 | Lightweight stenographic machine with separate and additional number keys A stenographic machine includes a keyboard having a first area containing keys designated for at least some of numerals "1", "2", "3", "4", "5", "6", "7", "8" and "9", a second area containing keys designated for consonant letters, a third area containing... | 04/20/1993 |
| 5186555 | Key arrangement for word processor or the like electrode instrument or machine A keyboard, for use in a workprocessor or like electronic machine, includes multiple keys arranged in an array of rows and columns, a stationary base, a moveable operator connecting each key and the stationary base such that each key is moveable in four d... | 02/16/1993 |
| 5184903 | Stenographic machine including a disposable ribbon cartridge A compact and disposable stenographic ribbon cartridge system includes a cartridge driven by an external drive. The cartridge contains a densely-packed ribbon that is automatically inked. Under urging of the drive, the ribbon travels through an external g... | 02/09/1993 |
| 5152617 | Stenographic machine having power driven note marker A stenographic machine of the type having a platen means for supporting a paper tape and a memory means for electronically storing stenographic notes as well as a plurality of keys and associated electromechanical elements for recording testimony and proc... | 10/06/1992 |
| 4775255 | Ternary chord-type keyboard Described is a data entry keyboard having a small number of keys, each key being a ternary device having three possible positions. In the preferred embodiment, each key is adapted to move towards or away from the operator, and has a central "off" position... | 10/04/1988 |
| 4765764 | Keyboard A keyboard for use with a stenographic transcription and translating assembly possessing word processing capabilities having horizontal and vertical groupings of keys indicating the generation of signals characterizing consonant and vowel letters or non-p... | 08/23/1988 |
| 4692042 | Computerized printing system A computerized system for the rapid rendering of written or spoken material into printed text. A stenographic record of the material is produced by a reporter according to a stenographic system including "automatics" to enable batch translation of the ste... | 09/08/1987 |
| 4632578 | Computerized printing system A computerized system for the rapid rendering of written or spoken material into printed text. A stenographic record of the material is produced by a reporter according to a stenographic system including "automatics" to enable batch translation of the ste... | 12/30/1986 |
| 4439798 | Referencing device for digital data recorders An improved referencing device for identifying for future reference a portion of a data record as it is being recorded for use in combination with a shorthand machine generating electrical output signals corresponding to the keys depressed, a recording me... | 03/27/1984 |
| 4363557 | Marking device for shorthand machine A marking device for a shorthand machine selectively marks the margins of the paper tape output of the shorthand machine to denote a portion of the shorthand notes for ready reference. The activating keys for the device are located in close proximity with... | 12/14/1982 |
| 4323316 | Shorthand machine paper gauge A paper gauge for use with a shorthand machine to determine the quantity of paper remaining in the shorthand machine. A scale arm weighs the paper tape in the machine and the gauge is calibrated by weight to give the shorthand machine operator a reading i... | 04/06/1982 |
| 4307970 | Key extension for shorthand typewriting machine A shorthand typewriting machine includes a standard keyboard having two rows of upper keys respectively corresponding to consonant characters and an asterisk character all positioned for operation by the fingers, and a lower row of keys respectively corre... | 12/29/1981 |
| 4176973 | Stenotype tape marking attachment A tape marking attachment for a stenotype machine. The marking attachment has a mounting base to be fixed tothe machine frame and at least one marking pad resiliently mounted on the base, as by a hinged spring arm, for depressing into marking engagement w... | 12/04/1979 |
| 4041467 | Transcriber system for the automatic generation and editing of text from shorthand machine outlines A transcriber system for the automatic translation of stenographic notes from phonetic outlines produced on a shorthand machine to text displayed or printed out. The basic components of this system are the recording station comprising a shorthand machine,... | 08/09/1977 |
| 4024943 | Marking apparatus for stenographic typewriter or the like A marking apparatus for use with a mechanical symbol transcribing apparatus such as a stenographic typewriter comprises a lever having a marking means attached to one end of the lever for marking the web or tape carrying the record generated by the appara... | 05/24/1977 |