4. Metal working
  5. Method of mechanical manufacture
  6. Assembling or joining

David A. Edgerton

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Braille architectural sign apparatus

Education and demonstration – Communication aids for the handicapped – Tactile reading aid
Patent

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Method and apparatus for laminating ceramic tile

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Reexamination Certificate

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Method for placing braille letters on architectural signs

Metal working – Method of mechanical manufacture – Assembling or joining
Patent

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Profile ID: LFUS-PAI-P-1192471

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