Felling Trailers, Inc. was recently awarded a U.S. patent grant for their Air Bi-fold Ramps System, U. S. Patent 11,613,197. The Air Bi-fold Ramps system was first introduced to the construction and ...
The Automatic Strap Latch is a totally functional and simple strap latch system that provides an “all-strap” and “only-strap” bi-fold door. Designed to also be responsible for latching Straps secure ...
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