When
Mel Brooks was preparing "Young Frankenstein," he found that
Ken Strickfaden, who had made the elaborate electrical machinery for the lab sequences in the Universal Frankenstein films, was still alive in the Los Angeles area. He visited Strickfaden and found that Strickfaden had saved all the equipment and had it stored in his garage. Brooks made a deal to rent the equipment for his film and gave Strickfaden the screen credit he'd deserved, but hadn't gotten, for the original films.
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