John Ernest Elwart

📍 El Segundo, CA: #132 of 672 inventorsTop 20%

🗺 California: #106,790 of 386,348 inventorsTop 30%

Overall (All Time): #975,697 of 4,157,543Top 25%

Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #	Title	Co-Inventors	Date
10788139	Earthquake water shutoff valve	—	2020-09-29
9124052	Self grounding electrical outlet	—	2015-09-01
6756701	Shock responsive momentary relay	—	2004-06-29
6237291	Floor receiving concrete block	—	2001-05-29
6016633	Concrete block form	—	2000-01-25