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  • LIBRARY FINE COMPUTER / HEBBEBT S. HIRSHBEKG (1915)
  • BOOK-INDEXING / HOYT N. MECLAIN (1909)
  • INDEXING-MACHINE FOR BOOKS / FLETCHER (1864)
  • CATALOGUE-CARD-ASSORTING DEVICE / ADELAIDE R. HASSE (1897)
  • INFORMATION STORAGE, RETRIEVAL, AHD HANDLING APPARATUS / Emik A. Avakian (1952)

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