Shock! The Professor's Invention Is What?!?!

Nouveau Drythorn City was the place to be for anyone with an interest in the latest golem designs or the financial opportunities in golems and golem-related industries which had already created a new class of the wealthy. No map of the continent showed any place more likely to reward daring, whether intellectual, entrepreneurial, or criminal.
It was in response to that last, Professor Brannes declared, that he had embarked on his latest endeavor. When Brannes talked, the clued-in listened, and so a crowd assembled at the professor's atelier before the appointed time. Giddy inventors, exuberant investors, and common announcement-lovers made up the mass, and any among them who thought he saw some government officials or underworld fixtures with their hats pulled low would not have been mistaken.
"Thank you for coming, gentlemen." Professor Brannes walked out while the sound of the last bell still vibrated in the audience's ears. He snapped open the cover of his own watch as well to check the time, for he left nothing to chance. "It is not my intention to waste time. You know the situation as well as I. Golem crime is on the rise. A special unit has been formed to combat it, but without better tools, unscrupulous criminals will keep the advantage. That is why I invented the stoplem."
Murmurs spread throughout the crowds, heads were put together, and a few shady figures ran off to report on the emerging situation.
The professor did not wait for silence. "Yes, the stoplem. Though incapable of movement on its own, the authorities will find it an invaluable ally. The field it emits interferes with golem animation, rendering the target helpless, or at least diminished in capacity when it comes to high-output models. Let the golem gangs beware." He raised his hand, and behind him the thick, heavy shutter guarding his atelier rolled up.
The murmur broke out into a full tumult. At first Professor Brannes believed the excellence of his invention caused it, but when he turned, he realized the truth. The prototype stoplem was gone, stolen. The news flew through the city on wings of trepidation. At headquarters, the Golem Crime Unit began to move.
Finis