There is definite proof that Jackson-Bell went into receivership on December 2, 1932.
Radios that appear with their identity long after Jackson-Bell's demise are a suspect. Some even have obvious evidence of having been made by an entirely different company. How this came about will be explored in detail in this blog post.

We've all seen radios that have been altered since they left the factory. When those changes include nameplates and other identifiers, we begin to question the sets authenticity.
In this article we will explore what happened to Jackson-Bell products that allowed continued production of sets by others after Jackson-Bell no longer produced their own.
This Is by no means an exhaustive accounting of who was involved, how many different models were created, or how long this practice continued. But this article is a great place to start your own research!