HS

Herman E. Sheffield

AP Automatic Power: 1 patents #3 of 11Top 30%
Overall (All Time): #2,348,678 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4595978 Programmable control circuit for controlling the on-off operation of an indicator device — 1986-06-17
4218139 Solar energy device and method — 1980-08-19