| Patents for B21D 13 - Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form (2,021) |
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| 12/06/1983 | US4418558 Method of manufacture of ventilated sheet metal floor members |
| 11/15/1983 | CA1157059A1 Method and apparatus for embossing foil |
| 11/10/1983 | WO1983003784A1 Method for making closed grooves and body obtained thereby |
| 11/10/1983 | WO1983003783A1 Method and device for manufacturing hollow bodies provided with cooling ribs |
| 11/08/1983 | US4413495 Method for the stiffening and straightening of starting sheets |
| 10/25/1983 | US4411146 Method and apparatus for the straightening and stiffening of starting sheets in electrolytic refining plants |
| 10/18/1983 | US4409813 Method and apparatus for corrugating strips |
| 08/30/1983 | CA1152977A1 Heat exchanger plate having distortion resistant uniform pleats |
| 07/04/1983 | EP0072797A4 Heat exchanger plate having distortion resistant uniform pleats. |
| 06/21/1983 | CA1148339A1 Method and apparatus for flattening corrugated heat exchanger plates |
| 05/24/1983 | US4385087 Facetted tinsel and method and apparatus for manufacturing same |
| 05/11/1983 | EP0078485A1 Method of manufacturing a helix |
| 04/05/1983 | CA1144053A1 Method and apparatus for the straightening and stiffening of starting sheets in electrolytic refining plants |
| 03/08/1983 | CA1142420A1 Apparatus for rolling curved sections |
| 03/02/1983 | EP0072859A1 Panel and panel assembly. |
| 03/02/1983 | EP0072797A1 Heat exchanger plate having distortion resistant uniform pleats. |
| 02/23/1983 | EP0072739A1 Method of making panels with closed ribs |
| 01/05/1983 | EP0068633A2 Method, apparatus and forming roll for forming material with a bidirectional periodicity |
| 01/04/1983 | CA1138797A1 Method and apparatus for the stiffening and straightening of starting sheets |
| 12/23/1982 | WO1982004417A1 Method for manufacturing webs or plates of thermoplastic material comprising, on one side or on both sides, a multitude of protuberant profiles |
| 12/21/1982 | US4364253 Panel forming apparatus |
| 12/21/1982 | CA1137828A1 Mill for transverse deformations on sheet metal |
| 11/16/1982 | US4358916 Novel corrugated metal building structural unit |
| 10/19/1982 | CA1133817A1 Large profile sheet metal corrugator |
| 10/14/1982 | WO1982003347A1 Producing formations in continuously processed material |
| 09/07/1982 | US4347726 Method and device for bending sheet-metal sections |
| 09/02/1982 | WO1982002940A1 Heat exchanger plate having distortion resistant uniform pleats |
| 09/02/1982 | WO1982002914A1 Wide panel,panel assembly,and panel forming apparatus |
| 08/31/1982 | US4346582 Method for flattening corrugated heat exchanger plates |
| 08/31/1982 | US4346576 Apparatus for severing corrugated metal products |
| 08/10/1982 | US4343866 Deeply embossed sheet product |
| 07/20/1982 | US4340361 Apparatus for heat-treating cast iron pipes |
| 07/06/1982 | EP0046750A4 Method and apparatus for flattening corrugated heat exchanger plates. |
| 07/06/1982 | CA1126940A1 Method for stretching sheet metal and structural members formed therefrom |
| 06/24/1982 | WO1982002009A1 Device for corrugating sheet material |
| 05/26/1982 | EP0052592A2 Heat transmission roll and a method and an apparatus for manufacturing such a roll |
| 05/04/1982 | US4327570 Apparatus for bending strip material into toothed shape |
| 03/23/1982 | US4320648 Method for making roofing |
| 03/16/1982 | US4319473 Apparatus for corrugating a metal tape |
| 03/10/1982 | EP0046750A1 Method and apparatus for flattening corrugated heat exchanger plates. |
| 03/02/1982 | US4317350 Corrugated plate having variable material thickness and method for making same |
| 01/19/1982 | US4311034 Process and apparatus for forming compressed crimped metal foil heater ribbon |
| 12/10/1981 | WO1981003442A1 Method of making articles with annular corrugations |
| 11/18/1981 | EP0039847A1 Method of manufacturing webs or sheets of thermoplastic material provided with protruding profiles on one or both sides |
| 10/20/1981 | US4295353 Mill stand for forming discontinuous longitudinal deformations in sheet metal |
| 10/20/1981 | CA1110818A1 Corrugated metal building structural unit |
| 10/06/1981 | US4292830 Mill for making transverse deformations on sheet metal |
| 09/17/1981 | WO1981002535A1 A method of bending shaped metal sheet and apparatus for carrying out the method |
| 09/09/1981 | EP0035483A2 A method of bending shaped metal sheet and apparatus for carrying out the method |
| 08/19/1981 | EP0033813A2 A corrugated metal building panel |
| 08/06/1981 | WO1981002121A1 Method and apparatus for flattening corrugated heat exchanger plates |
| 07/28/1981 | US4280352 Apparatus for forming corrugated sheet material |
| 06/30/1981 | US4275581 Method for increasing the fin density of a heat exchanger |
| 06/23/1981 | US4274275 Method of forming a corrugated annulus |
| 05/26/1981 | US4269055 Large profile sheet metal corrugator |
| 05/19/1981 | US4267954 Method of making nailable steel floor channels |
| 04/28/1981 | CA1099959A1 Metal forming process |
| 03/24/1981 | US4257251 Metal forming process |
| 02/17/1981 | US4250728 Apparatus and method for forming steps in profiled sheets of material |
| 01/28/1981 | EP0022884A1 Method and apparatus for bending sheet material and bent sheet material obtained |
| 12/23/1980 | US4241146 Corrugated plate having variable material thickness and method for making same |
| 12/02/1980 | CA1090545A2 Terminal connectors and method of making same |
| 11/18/1980 | US4233833 Method for stretching sheet metal and structural members formed therefrom |
| 09/16/1980 | CA1085817A1 Rotor for moisture and/or heat exchangers as well as method and apparatus for manufacture thereof |
| 05/15/1980 | WO1980000932A1 Method and device for bending corrugated sheet-metal sections |
| 03/25/1980 | US4194330 Nailable steel floor channel with anti-skid surface |
| 01/23/1980 | EP0007148A1 Method of and apparatus for increasing the fin density of heat exchanger sheet material |
| 01/08/1980 | CA1069282A1 Channel type terminal connectors and method of making |
| 12/25/1979 | US4179912 Apparatus and methods for forming panels having scalloped cross-sections |
| 12/12/1979 | EP0005959A1 Heat exchanger fins and apparatus for making same |
| 11/20/1979 | CA1066600A1 Sheet metal bending machine |
| 10/09/1979 | US4170122 Apparatus for making corrugated sheet material |
| 06/19/1979 | CA1056862A1 Machine for producing folded structures |
| 06/05/1979 | CA1055740A1 Mobile forming machine with embossing rolls |
| 05/15/1979 | US4154565 Corrugator roll |
| 05/08/1979 | CA1053988A1 Corrugated metal sheet and method for its manufacture |
| 04/17/1979 | US4149304 Method of making rolls for forming radar reflective surfaces |
| 04/03/1979 | CA1051720A1 Press mechanism for stamp forming articles from plate material |
| 02/13/1979 | US4138875 Sheet metal bending machine |
| 02/06/1979 | US4137744 Apparatus for forming turbulators |
| 01/23/1979 | CA1046711A1 Heat exchanger strip and method for forming same |
| 01/09/1979 | US4133299 Solar heat absorber plate |
| 12/12/1978 | CA1044077A1 Roof for railway car and method of making same |
| 09/26/1978 | US4116603 Apparatus for corrugating a web of sheet material |
| 09/12/1978 | CA1038281A1 Perforating machine for forming side flanged openings |
| 08/29/1978 | US4109503 Method for manufacturing metallic ribs on sheet stock |
| 08/29/1978 | CA1037318A1 Method and apparatus for forming corrugated pipe |
| 08/22/1978 | CA1036904A1 Expansible drive shaft tool mechanism |
| 08/15/1978 | US4107394 Corrugated sheet metal heat transfer member |
| 07/18/1978 | US4100787 Method and apparatus for making rectangular corrugated expansion joints |
| 07/04/1978 | US4098722 Catalyst supports |
| 06/06/1978 | US4092842 Deeply embossed sheet product and method and apparatus for the production thereof |
| 05/30/1978 | US4091652 Apparatus for shaping metal sheets |
| 05/23/1978 | US4090384 Apparatus for forming a structural medium |
| 05/02/1978 | US4087302 Method for forming a structural panel |
| 03/07/1978 | US4077247 Method and apparatus for improving the formability of sheet metal |
| 02/28/1978 | US4076166 Roof for railway car and method of making same |
| 02/21/1978 | US4074495 Sheet metal panel |
| 01/24/1978 | US4069749 Expansible drive shaft tool mechanism |
| 01/10/1978 | US4067219 Heat exchanger fin roll |