RA

Robin Elizabeth Armstrong

📍 Toronto, CA: #3,468 of 9,482 inventorsTop 40%
Overall (All Time): #1,987,736 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9728099 Manipulative system for teaching musical notation — 2017-08-08
4249449 Musical instrument — 1981-02-10