4. Communications: electrical
  5. Condition responsive indicating system
  6. Specific condition

Ulrich Frick

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Preparation of metal-free phthalocyanines

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent

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Smoke-screen for obscuring premises

Communications: electrical – Condition responsive indicating system – Specific condition
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Tapping apparatus

Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Having tool-opposing – work-engaging surface
Reexamination Certificate

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Profile ID: LFUS-PAI-P-776513

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