| 摘要 |
A sheet material clamp having a rigid clamp base of a pre-selected length. The rigid clamp base has a clamping surface and at least two clamping apparatus attached to the clamping base for applying clamping pressure through a pressure foot toward the clamping surface. The apparatus for applying clamping pressure are spaced along the length of the clamp base so that clamping pressure can be applied evenly along the edge of the sheet material being clamped.
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