US4490811 |
String comparator device system circuit and method |
1981-12-17 |
US4406626 |
Electronic teaching aid |
1982-03-29 |
EP0136379 |
Associative memory circuit system and method |
1983-10-03 |
US4758955 |
Hand-held spelling checker and method for reducing redundant information in the storage of textural material |
1985-07-19 |
USD300534S |
Digital display spelling dictionary |
1986-11-19 |
US4830618 |
Electronic spelling machine |
1987-10-23 |
US5113340 |
Search improvements for electronic spelling machine |
1988-05-25 |
US4891775 |
Electronic word game machine |
1988-05-27 |
US5007019 |
Electronic thesaurus with access history list |
1989-01-05 |
USD321366 |
Curved font |
1989-06-16 |
US4982181 |
Alphanumeric display |
1989-07-28 |
US5203705 |
Word spelling and definition educational device |
1989-11-29 |
US5218536 |
Electronic spelling machine having ordered candidate words |
1990-01-02 |
US5153831 |
Electronic text |
1990-05-29 |
US5333313 |
Method and apparatus for compressing a dictionary database by partitioning a master dictionary database into a plurality of functional parts and applying an optimum compression technique to each part |
1990-10-22 |
US5229936 |
Device and method for the storage and retrieval of inflection information for electronic reference products |
1991-01-04 |
US5295070 |
Electronic dual language dictionary |
1991-05-31 |
US5396606 |
Address bus switching between sequential and non-sequential ROM searches |
1991-07-31 |
US5321609 |
Electronic encyclopedia |
1992-05-27 |
US5249965 |
Electronic word selection machine |
1992-08-06 |
USD348439 |
Electronic ROM card reader |
1992-09-17 |
USD349281 |
Computer card package for providing additional memory and data for a digital book |
1992-10-20 |
US5497474 |
Data stream addressing |
1993-02-25 |
US5602963 |
Voice activated personal organizer |
1993-10-12 |
US5435564A |
Electronic word building machine |
1993-12-22 |
USD362271S |
Electronic book with display screen and folding cover |
1994-09-01 |
USD364861S |
Computer card package |
1994-09-01 |
USD362272S |
Electronic book with display screen |
1994-09-01 |
USD362461S |
Electronic book with display screen and speaker |
1994-09-01 |
US5640552 |
Method and apparatus for providing multi-level searching in an electronic book |
1995-02-27 |
US5717938A |
Coded cartridges for electronic books |
1995-06-16 |
US5627726 |
Electronic card with printed circuit board as outer surface |
1995-08-07 |
US5774109 |
Electronic scrolling book with temporary interruptions |
1995-12-29 |
US5739451 |
Hand held electronic music encyclopedia with text and note structure search |
1996-12-27 |
US5895463A |
Compression of grouped data |
1997-05-20 |
US5978591 |
Personal information device and method for downloading reprogramming data from a computer to the personal information device via the PCMCIA port or through a docking station with baud rate conversion means |
1998-02-24 |
US6205540B1 |
Processor with enhanced instruction set |
1998-06-19 |
US6223233B1 |
Wallet for personal information device |
1998-11-11 |
US6202209B1 |
Personal information device and method for downloading reprogramming data from a computer to the personal information device via the PCMCIA port or through a docking station with baud rate conversion means |
1999-08-05 |
US20050216755A1 |
Secure portable electronic reference device |
2004-03-25 |