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| Patents for B21D 39 - Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders (11,420) |
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| 08/03/1976 | US3972371 Tube and tube-plate assembly | | 07/20/1976 | US3970400 Deformingly interlocked structural joint | | 07/20/1976 | US3969920 Splicer for reinforcing bars | | 07/06/1976 | US3967840 Joint and process for forming same | | 06/22/1976 | US3964520 Connection between two inter engaging elements | | 06/15/1976 | US3962769 Hydraulic chuck | | 06/08/1976 | US3961518 Crimping device | | 05/18/1976 | US3956818 Method for securing a tube in a passage of a support | | 05/18/1976 | US3956815 Explosively propelled equal mass tubular member swaging tool | | 05/11/1976 | US3955834 Apparatus for connecting ducts with a self-sealing joint | | 04/06/1976 | US3947950 Apparatus and method for beading tubes | | 03/09/1976 | US3942240 Method for the attachment of tubular pipe connection means to a sheet metal Wall and a device according to the method | | 03/02/1976 | US3940837 Hot air furnace with improved heat exchanger construction | | 02/24/1976 | US3939681 Method of explosively expanding tubes | | 02/17/1976 | US3938240 Methods of providing a tube with a thread ring | | 02/10/1976 | US3937054 Heavy duty pipe spreader | | 01/27/1976 | US3934899 Fastening arrangement of one sheet-metal member provided with a rim in another sheet-metal member also provided with a rim | | 01/27/1976 | US3934327 Method of interlocking overlapping sheet material | | 01/20/1976 | USRE28684 Apparatus for automatically connecting shutter slat and preventing its disengagement | | 01/06/1976 | US3930298 Method of forming a tube fitting assembly |
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