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CA961397A
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Machine for forming rectangular air ducts
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AU5849873A
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Rectangular duct and method of making same
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Rectangular-duct forming machine
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FR1451928A
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Portable tool for cutting sheet metal
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Portable sheet metal hole cutter
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Portable sheet metal hole cutter
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Detachable heat conduit fittings
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Conduit fitting having a radially swingable end locking portion
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Heating conduit splice
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Heating conduit fitting having guiding and camming means
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CA631185A
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Detachable heat conduit fitting
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CA617231A
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Automotive testing, starting and switching unit
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CA649646A
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Conduit coupling
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CA690144A
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Portable sheet metal hole cutter
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CA631186A
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Rectangular detachable conduit fitting
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CA761694A
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Portable sheet metal hole cutter
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CA660878A
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Conduit coupling
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