Sorry Ken, but I don't know the answer to your question. It would not be surprising to learn that Imperial Schrade bought minor components from vendors and assembled them in their plant in Ellenville. I do know that in the "latter days", boxes and brochures were being printed in China. Also understand that some few years (can't remember exactly when) the "new" owner of Schrade, after the passing of the Baer brothers, brought in a "turnaround specialist" who evidently did not know anything about knives and their manufacture. He is credited with driving the bus over the cliff. The same "specialist" was also sent to Camillus and they sent him packing before it came crashing down there as well. During that final timeframe at ISC, the management, who knew knives and the knife industry, was essentially hamstrung in making major decisions, first by the "specialist" and then by the court appointed receivers.
Like the question about the origin of the engraved white handled knife in another thread recently, the best resource for the answer to this question would be to impose on Eric to ask the other people who were actually there. I never worked at ISC and in fact have never even been to Ellenville or Walden N.Y. My information comes only from research, archives and speaking to former employees.
Michael