Grain drill depth adjustment tool

• US D521,531 S1
• Filed: 12/09/2004
• Issued: 05/23/2006
• Est. Priority Date: 12/09/2004
• Status: Active Grant

• Current Assignee: Wynn Provines
• Original Assignee: Wynn Provines
• Inventors: Provines, Wynn
• Primary Examiner(s): Watson, Gary D.
• Assistant Examiner(s): Nelson, T. Chase
• Application Number:
  US29/218,904
• Time in Patent Office: 530 Days
• Field of Search: D 8/61, D 8/62, D 8/63, D 8/64, D 8/65, D 8/66, D 8/67, D 8/68, D 8/69, D 8/70, D 8/1, D 8/14, D15/21, D15/28, D15/133, D15/138, D15/139, D15/140, 111/54, 111/69, 111/73, 111/156
• US Class Current: D15/28
• CPC Class Codes: N/A

Claims

1. The ornamental design for a grain drill depth adjustment tool, as shown and described.