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- 81179040 contributor B4064310.
- 81179040 created "c1981.".
- 81179040 date "1981".
- 81179040 date "c1981.".
- 81179040 dateCopyrighted "c1981.".
- 81179040 extent "iii, 591 p. :".
- 81179040 issued "1981".
- 81179040 issued "c1981.".
- 81179040 language "eng".
- 81179040 publisher "Needham Heights, Mass. (P.O. Box 55, Needham Heights 02194) : Boston Patent Co.,".
- 81179040 spatial "United States.".
- 81179040 subject "621.3819/58/0272 19".
- 81179040 subject "Electronic data processing Patents.".
- 81179040 subject "Electronic digital computers Patents.".
- 81179040 subject "Patents United States.".
- 81179040 subject "TK7888.3 .U55".
- 81179040 title "United States patent digest, 1979 : class 364, electrical computers and data processing systems.".
- 81179040 type "text".