Bjorn N. Hansen

IE International Standard Electric: 2 patents #74 of 567Top 15%

📍 Haverhill, MA: #118 of 285 inventorsTop 45%

🗺 Massachusetts: #42,150 of 88,656 inventorsTop 50%

Overall (All Time): #2,346,144 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4564939	Handsfree telephone	—	1986-01-14
4560840	Digital handsfree telephone	—	1985-12-24