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PH and concentration meter

  • US D346,753 S
  • Filed: 05/10/1990
  • Issued: 05/10/1994
  • Est. Priority Date: 05/10/1990
  • Status: Expired due to Term
First Claim
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1. The ornamental design for a pH and concentration meter, as shown and described.

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  • 6 Assignments
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