pH meter

• US D312,421 S
• Filed: 09/04/1987
• Issued: 11/27/1990
• Est. Priority Date: 09/04/1987
• Status: Expired due to Term

• Current Assignee: HACH Company Loveland Colorado A Corporation of
• Original Assignee: Hach Company (Veralto Corp.)
• Inventors: Trottmann, Jerry B.
• Primary Examiner(s): Holtje, Nelson C.
• Assistant Examiner(s): Davis, Antoine D.
• Application Number:
  US07/093,391
• Time in Patent Office: 1,180 Days
• Field of Search: D10/46, D10/52, D10/53, D10/54, D10/57, D10/78, D10/75, D10/81, D10/102, D10/103, 73/431, 204/1 H, 204/1 T, 204/196, 204/433, 204/435, 204/407, 204/430, 204/1 W, 324/156, 324/438
• US Class Current: D10/81
• CPC Class Codes: N/A

Claims

1. The ornamental design for a pH meter, as shown.