4. Expanded, threaded, driven, headed, tool-deformed, or locked-thr
  5. Washer structure
  6. Including adjustable thickness means

Arthur B. Richardson

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Expansion washer

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Washer structure – Including adjustable thickness means
Patent

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Moveable structural reinforcement system

Static structures (e.g. – buildings) – Means compensating earth-transmitted force – Cross bracing
Reexamination Certificate

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Moveable structural reinforcement system

Static structures (e.g. – buildings) – Means compensating earth-transmitted force – Cross bracing
Reexamination Certificate

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