Yellow Signal Lantern

I found this lantern in my travels the other day, It has a small label on the bottom front that says PASTCO Trademark Pacific Signal Company Lynwood, CALIF Pats Pend. I have searched and searched and can not find anything about this lantern. Does anybody know anything about them? There are two bulbs inside the glass. Other than the label on the front there are no other markings. I thought it was cool looking but would just like to know more about it. Thanks