4. Road structure, process, or apparatus
  5. Traffic steering device or barrier

David E. Cowan

Inventor

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Barrier with interlocking sides

Building units and construction elements – Prefabricated unit – Railing unit or fence
Design Patent

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Barriers with kiss-offs

Road structure – process – or apparatus – Traffic steering device or barrier
Reexamination Certificate

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Portable sign assembly

Card – picture – or sign exhibiting – Signs – Sign support
Reexamination Certificate

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Traffic channeling device

Signals and indicators – Street traffic – Portable
Reexamination Certificate

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Traffic channelizer

Measuring – testing – or signalling instruments – Security or signal instrument or casing – Visual
Patent

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Profile ID: LFUS-PAI-P-1148135

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