Patent comparison

Compare Patents

Compare two patents side by side. Add ?a=us/7657849&b=us/8046721 to the URL to load specific patents.

US 1394450

How the First Automatic Pop-Up Toaster Works

Charles Strite's 1921 patent for the first toaster that automatically pops bread up after a set time, preventing it from burning.

Statusexpired

Granted1921

Expires1940

Claims0

Forward citations2

Prior art0

AssigneeIndividual

InventorsCharles P Strite

Patent B

Add ?b=us/7657849 to compare

How to use

Bookmark a comparison URL to save it. Format: /compare?a=[country]/[number]&b=[country]/[number]. Example: /compare?a=us/7657849&b=us/8046721