US3381278A
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Data holding system
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US3214520A
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Query-reply signal processing apparatus
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US3227474A
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Encoding apparatus
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US3146701A
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Printer for data processing apparatus
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US3146700A
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Printer for data processing apparatus
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US3146702A
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Printer for data processing apparatus
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GB959976A
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Cryptic grid scrambling and unscrambling method and apparatus
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US3038032A
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Electronic transceiving distributor telegraph system
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US3133268A
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Revisable data storage and rapid answer back system
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US3051382A
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Card controlled switch device
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US3120585A
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Rotary switch with replaceable contact sets
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US3052874A
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Permutationally controlled track selector for multi-track recording and read-out systems
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US3011022A
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Electronic receiving distributor
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US2952080A
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Cryptic grid scrambling and unscrambling method and apparatus
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US3033447A
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Automatic computer program system
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GB824435A
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Recording and reproducing arrangement using a single transducer head for multiple track records
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GB842108A
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An electrically operated reservation system for maintaining an inventory of accommodation
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GB841283A
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Inventory systems using magnetic storage of inventory items
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US2842757A
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System for data storage indexing
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US3011153A
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Compatible ticker and automatic quotation board system
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