Communications: electrical – Digital comparator systems
Patent
1988-01-19
1988-09-20
Brigance, Gerald L.
Communications: electrical
Digital comparator systems
340114R, 34081501, 116 63C, 40612, G02B 512
Patent
active
047728698
ABSTRACT:
A portable information marker having a tetrahedron stand joined to a base supported on a surface. The stand has a top wall releasably accommodating an information unit. The information unit and top wall have interlocking slot and ear structures allowing the information unit to be removed from the top wall and replaced with an alternate information unit. The alternate information unit can be a flashing light unit.
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Callas Michael T.
Grammas Nick G.
Brigance Gerald L.
Lamba Systems, Inc.
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