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US1698376A
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Production or manufacture of disks, or blanks for buttons or the like
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US1660239A
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Method of classifying irregularly-shared material employed in the making of buttons or blanks for disks or the like
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US1660726A
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Method of producing buttons or blanks for disks, buttons, or the like from irregularly-shaped pieces of material
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US1491931A
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Measurement of irregular-shaped button-blank material or the like
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US1695816A
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Production or manufacture of disks or blanks for buttons or the like from irregularly-shaped pieces of material
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US1347215A
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Separating-machine
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US1435954A
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Saw-filing machine
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US1393846A
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Button-blank gage
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US1241467A
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Method of forming buttons.
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US1350794A
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Machine for separating button-blanks
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US1282077A
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Feeding-table for button-blanks.
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US1272435A
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Machine for locating and embossing buttons.
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