Elson B. Spangler

📍 Bloomfield Hills, MI: #393 of 1,072 inventorsTop 40%

🗺 Michigan: #27,158 of 86,293 inventorsTop 35%

Overall (All Time): #1,673,145 of 4,157,543Top 45%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
4741207	Method and system for measurement of road profile	—	1988-05-03
4473319	Controlled resurfacing of roads and the like	—	1984-09-25
4422322	Method and system for measurement of road profile	—	1983-12-27