The following is a passage from a text book for English learners about the invention of "Franlin stove" by Benjamin Franklin .
Ben made a better fireplace. All the smoke from the new fireplace went up the chimney. All the hot air went into the room. And it had a door to keep sparks in it. A lot of people called it the Franklin stove. Soon people all over America were using Franklin stoves.
I'm wondering if the last sentence is correct. I have a feeling that the sentence lacks something describing "change" such as "become" or "will be". Am I wrong?