RL

Robert R. Laupman

📍 Wijchen, NL: #24 of 94 inventorsTop 30%
Overall (All Time): #1,309,740 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
4349787 Compressor — 1982-09-14
4322690 Device for protecting an audio amplifier against overload or short-circuit — 1982-03-30
4213515 Speaker system — 1980-07-22
4208546 Phase stereophonic system — 1980-06-17