Inventor
Gracie S. Roberts
Nº
204846
Invention
Improvement in case-hardening iron
Date
June 10, 1878
Address
Brooklyn, NY
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.