Football first down indicator system

Signals and indicators – Indicators – Game type

Reexamination Certificate

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Details

C473S438000, C473S470000, C033S289000

Reexamination Certificate

active

06907840

ABSTRACT:
A football first down indicator system for providing a method of quickly and accurately determining a first down in football. The football first down indicator system includes a pair of first down marker members each having an elongate housing member, and also having a stub shaft being attached to a bottom of the elongate housing member for resting upon a ground, and further having a down display housing being attached to a top of the elongate housing member; and also includes a plurality of number display members being rotatably disposed in each down display housing; and further includes an assembly for determining and signaling a first down in football.

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patent: 2002/0151385 (2002-10-01), Hemphill

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