4. Signals and indicators
  5. Indicators
  6. Chemically activated type

Joseph W. Ramsey

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Method for forming an electrical conductive circuit on a...

Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate

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On demand useful life indicator

Signals and indicators – Indicators – Chemically activated type
Patent

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On-demand useful life indicator and method of making same

Signals and indicators – Indicators – Chemically activated type
Patent

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Status indicating and tamper evident closure

Packages and containers for goods – Element or attachment – Closure – cover – or pouring attachment
Patent

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Profile ID: LFUS-PAI-P-75916

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