Inventor
Fanny B. Shannon
Nº
356187
Invention
Device for teaching fractions
Date
January 17, 1887
Address
Denver, Colo
Assignor
Assignor Address
Illustration
We are currently working on embedding the patent drawings.
View now on Google Patents.

We’re creating original things.
Come take a peek.

Sign up to our waitlist to get the inside scoop on what we’re working on next.
BookPatentsBioContact
© 2022 Emikeni Inc. All Rights Reserved.