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PAT. NO. Title

1 6,976,111 High-density removable expansion module having I/O and second-level removable expansion memory

2 6,920,517 Nested removable-removable modules with game and media-player applications

3 6,863,557 High-density removable expansion module having I/O and second-level-removable expansion memory

4 6,691,196 First-level removable module having bar code I/O and second-level removable memory

5 6,599,147 High-density removable expansion module having I/O and second-level-removable expansion memory

6 5,842,170 Method for editing in hand held recorder

7 5,839,108 Flash memory file system in a handheld record and playback device

8 5,787,445 Operating system including improved file management for use in devices utilizing flash memory as main memory

9 5,742,737 Method for recording voice messages on flash memory in a hand held recorder

10 5,696,928 Memory chip architecture for digital storage of prerecorded audio data wherein each of the memory cells are individually addressable

11 5,477,511 Portable documentation system