Chester P. Coldren

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Mine bolt tension indicator

Patent

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Tamper resistant nut

Tools and hardware – Fastener – support or mount not elsewhere specified – Fastener or coupling
Patent

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Tension indicating and lock cone washer

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – With means to indicate application of predetermined... – Axially deformable member or portion
Patent

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Tension indicator

Signals and indicators – Navigation devices
Patent

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Profile ID: LFUS-PAI-P-435628

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