| A. H. Heisey
1896 — The factory opens with one sixteen-pot furnace.
1901 — The "H within a diamond" trade mark was registered.
1957 — Heisey closed the doors for Christmas vacation and they never opened again.
All of the assets were sold to the Imperial Glass Company of Bellaire, OH. Purchased were the moulds, equipment, and all traidmark rights.
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