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US2236033A
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Ornamental stringer for slide operated fasteners
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GB454248A
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Improvements in or relating to calculating mechanism
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GB454249A
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Improvements in or relating to calculating machines
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GB454250A
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Improvements in or relating to counters for calculating machines
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GB454247A
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Improvements in or relating to calculating machines
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GB440179A
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Improvements in statistical record cards
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GB413327A
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Improvements in or relating to calculating machines
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GB381221A
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Improvements in or relating to statistical or calculating machines
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GB365648A
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Improvements in or relating to apparatus for verifying perforated record cards
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GB344898A
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Improvements in or relating to apparatus for sorting, and counting from, statisticalrecord-cards
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GB302841A
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Improvements in or relating to record-card-controlled statistical machines
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GB288516A
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Improvements in or relating to record-card-controlled statistical machines
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GB288360A
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Improvements in or relating to record-card-controlled statistical machines
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GB269621A
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Improvements in or relating to controlling mechanism for record-card-controlled statistical machines
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GB269622A
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Improvements in or relating to electric-current distributors
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GB267599A
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Improvements in or relating to record-card-controlled statistical machines
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US1581510A
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Typewriter ribbon
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GB244207A
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Improvement in transfer sheets for manifolding and like purposes
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GB239607A
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Improvements in or relating to record-card-controlled statistical machines
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US1533382A
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Typewriter ribbon
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