Title: Blaw-Knox Company Advertisement
It says, "For special applications, wool or asbestos cloth may be used and wood frames may be substituted for steel frames where desired."
Manufacturers of Framed Cloth Bag Type Dust Collectors
1 Page of Product Description.
DATE: No copyright date, but removed from a 1934 collection.
Condition: Good. Uneven edge. Minor wear. Reverse side has unrelated information.
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