BURROUGHS SYSTEM DEVELOPMENT CORPORATION, A CORP. OF DE.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4597057 System for compressed storage of 8-bit ASCII bytes using coded strings of 4 bit nibblesExpiredDec 31, 81Jun 24, 86[G06F]
4499553 Locating digital coded words which are both acceptable misspellings and acceptable inflections of digital coded query wordsExpiredSep 30, 81Feb 12, 85[]
4495566 Method and means using digital data processing means for locating representations in a stored textual data baseExpiredSep 30, 81Jan 22, 85[G06F]
4471459 Digital data processing method and means for word classification by pattern analysisExpiredSep 30, 81Sep 11, 84[G06F]
4422158 Method and means for interrogating a layered data baseExpiredNov 28, 80Dec 20, 83[G06F]
4382277 Method and means utilizing multiple processing means for determining degree of match between two data arraysExpiredMay 14, 79May 03, 83[G06F]
4290115 Data processing method and means for determining degree of match between two data arraysExpiredMay 14, 79Sep 15, 81[G06F]
4267568 Information storage and retrieval systemExpiredNov 01, 77May 12, 81[G06F]
4249033 Vented radio frequency shielded enclosureExpiredApr 13, 79Feb 03, 81[H05K]

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