Whose logo is this?

Question

http://chrishorak.webs.com/IMG_1246.JPG

That is a link to the picture.

Answer 1

Since it has a California State stamp on it I would contact them, and their patent office for registered documents. Take it to the library of History Archives. Good luck

Answer 2

I would check with the Library of Congress US Patent Office, since you do have the Certificate number and it is the State of California 1927, they should be able to identify it for you.

Sorry I could not be of more help...thank you