IP Library › Granted Patent US 1,142,274
Granted Patent S1
US 1,142,274 · App. 29/992,889 · Granted Aug 18, 2026

Subsurface equipotential grounding system

Inventor: Jacob Downer (Middleton, ID)
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Quick Facts
Patent No.
US 1,142,274
App. No.
29/992,889
Granted
Aug 18, 2026
Kind
S1
Claims (1)

The ornamental design for a subsurface equipotential grounding system, as shown and described.

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