4. Typewriting machines
  5. Type-bar-action mechanism or type-face on type-bar or...
  6. Type-bar action

Arnold R. Wolfe

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Apparatus for embossing Braille labels

Typewriting machines – Type-bar-action mechanism or type-face on type-bar or... – Type-bar action
Patent

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Composition of matter for raised characters and method for manuf

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
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Method of making a sign having raised characters

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent

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Profile ID: LFUS-PAI-P-627099

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