4. Card, picture, or sign exhibiting
  5. Changing exhibitor
  6. Alphanumeric device

William T. Beierwaltes

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Automated window system and method for a building

Electricity: motive power systems – Motor-reversing – Periodic- or intermittent-reversing
Patent

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Keypad for building automation

Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate

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Keypad for building automation

Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate

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Modular display system

Card – picture – or sign exhibiting – Changing exhibitor – Alphanumeric device
Patent

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Profile ID: LFUS-PAI-P-1051007

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