In the Drake Manufacturing Company, Incorporated v$.$ Polyflow, Incorporated case, why did the court find in favor of the defendant?

Although the plaintiff's actions did not constitute $$doing business,$$ its use of the certificate of authority during post$-$trial proceedings was erroneous

The plaintiff was not properly incorporated in any state

The plaintiff's actions in Pennsylvania constituted $$doing business$$ and it failed to timely obtain a certificate of authority

The lower court abused its discretion when it found in favor of the defendant because its activities in the state did not make it liable in that state