Invention Grant
- Patent Title: First down indicator system
- Patent Title (中): 首先下降指标体系
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Application No.: US12855761Application Date: 2010-08-13
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Publication No.: US08220170B1Publication Date: 2012-07-17
- Inventor: Kenneth H. Winckler , Jason C. Greene
- Applicant: Kenneth H. Winckler , Jason C. Greene
- Agency: The Law Firm of P. Jeffrey Martin, LLC
- Agent P. Jeff Martin
- Main IPC: A63B71/06
- IPC: A63B71/06 ; G01B11/26 ; G01C15/00
Abstract:
A first down indicator system adapted for removable attachment to a first down marker post of markers of the type used in football games for marking a distance of ten yards to determine first down measurement.
Information query
