An Improved Draught Excluder
2211. O'Brien, A. G. Jan. 31. Draught - excluders. - Strips a of paper, canvas, linen, or similar flexible material are folded lengthwise into a zigzag or Z-shape, and string or cord may be inserted at the bends to increase the resiliency.
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | 2211. O'Brien, A. G. Jan. 31. Draught - excluders. - Strips a of paper, canvas, linen, or similar flexible material are folded lengthwise into a zigzag or Z-shape, and string or cord may be inserted at the bends to increase the resiliency. |
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