| Patents for B21C 37 - Manufacture of metal sheets, rods, wire, tubes, profilesor like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape (9,784) |
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| 11/07/1978 | US4124125 Advancing apparatus for spine fin tubing |
| 11/07/1978 | CA1041747A1 Method and device for the cold working of heat exchanger tubes for the attachment of spiral fins |
| 10/31/1978 | US4122696 Method and apparatus for manufacturing metallic pipe |
| 10/24/1978 | US4121747 Storage tank construction procedures |
| 10/24/1978 | CA1041042A1 Ball sizing machine and method |
| 10/10/1978 | US4118964 Lubricated mandrel for a finning machine |
| 10/10/1978 | US4118845 Apparatus for producing fine metal filaments |
| 10/10/1978 | CA1039984A1 Process and jig for following up the seams of an outer welding head used in spiral welding of tubes |
| 10/10/1978 | CA1039934A1 Heat exchanger and method of making same |
| 10/03/1978 | CA1039630A1 Strengthened metal pipe and process for making same |
| 09/26/1978 | US4116270 Tubular coiled heat exchanger and device for manufacturing same |
| 09/26/1978 | CA1039036A1 Heat-resistant mandrel for boss extruding |
| 09/26/1978 | CA1039035A2 Method of winding overlapping tubes of a heat-exchanger |
| 09/19/1978 | US4114431 Method of forming tubular metal products |
| 09/19/1978 | US4114398 Process for producing articles of jewelry, trinketry and the like, made of metals of different colors |
| 09/19/1978 | CA1038796A1 Method of producing high strength steel pipe |
| 09/12/1978 | CA1038145A1 Method for providing improved nucleate boiling surfaces |
| 09/05/1978 | US4111143 Assembly of straight duct and transitions |
| 09/05/1978 | US4111029 Manufacture of pipe stubs in walls of very great thickness |
| 09/05/1978 | CA1037884A1 Container and method of forming same |
| 08/29/1978 | US4109870 Multiorifice structure and method of making same |
| 08/29/1978 | CA1037318A1 Method and apparatus for forming corrugated pipe |
| 08/22/1978 | US4108212 Corrugated flexible metal tubing and method and apparatus for making same |
| 08/22/1978 | US4107832 Method for winding spiral fins onto oval tubing |
| 08/22/1978 | CA1036804A1 Method for forming a serrated-fin tube |
| 08/15/1978 | US4107394 Corrugated sheet metal heat transfer member |
| 08/15/1978 | US4106322 Press for pressing pipe fittings |
| 08/01/1978 | US4103408 Method for the cold working of heat exchanger tubing for the attachment of spiral fins |
| 07/25/1978 | US4102169 Method and apparatus for pipe bending |
| 07/25/1978 | US4102027 Spine finned tube |
| 07/18/1978 | US4100784 Finned tubing |
| 07/11/1978 | US4099662 Method and apparatus for producing welded steel tubes having large square cross section |
| 06/27/1978 | US4096720 Apparatus for making corrugated flexible metal tubing |
| 06/20/1978 | US4095594 Method of manufacturing laminated shells |
| 06/20/1978 | US4095321 Apparatus for manufacturing a helically finned heat exchanger |
| 06/13/1978 | US4094049 Casting rolling mill for wire |
| 06/06/1978 | US4093503 Method for fabricating ultra-narrow metallic lines |
| 05/30/1978 | US4091651 Drawing, straightening, sectioning and polishing machine |
| 05/30/1978 | US4091524 Process for producing pipe blooms |
| 05/16/1978 | US4089199 Ball bat and method of making the same |
| 05/09/1978 | US4087898 Metallic rod product, and method for producing same |
| 05/09/1978 | US4087893 Process for producing a heat pipe |
| 04/25/1978 | US4085608 Return elbow and crossover bender |
| 04/25/1978 | US4085607 Helically corrugating tubes |
| 04/25/1978 | US4085604 Method of making corrugated flexible metal tubing |
| 04/25/1978 | US4085496 Manufacture of metallic strip |
| 04/25/1978 | US4085491 Solar energy heat exchanger and method for making same |
| 04/18/1978 | US4084423 Method for forming a track link bushing having a contoured opening |
| 04/18/1978 | US4084309 Apparatus and method of manufacturing flexible ducting |
| 04/11/1978 | US4083219 Apparatus and method for forming cylindrical valve hubs |
| 04/04/1978 | US4082573 High tensile strength aluminum alloy conductor and method of manufacture |
| 04/04/1978 | US4082325 Coupling device for connecting a plurality of ports to one pipe |
| 04/04/1978 | US4082212 Galvanized tube welded seam repair metallizing process |
| 04/04/1978 | US4081985 Tool for forming necks on circumferential surfaces of pipes |
| 04/04/1978 | US4081981 Apparatus for producing a pipe from metal strip |
| 03/28/1978 | USRE29593 Production of multiple elongated products such as wire |
| 03/28/1978 | US4080817 Process and a device for the extrusion of materials in the form of narrow wires |
| 03/21/1978 | US4079611 Strip tension control system for the protection of fin tubing |
| 03/07/1978 | US4077116 Device for forming finned heat transfer tubes |
| 02/28/1978 | US4075747 Manufacture of metal strip |
| 02/14/1978 | US4073260 Apparatus for removing cross welds from metal tubes and marking the same |
| 02/14/1978 | US4073214 Shave forming of wire |
| 02/07/1978 | US4072035 Strengthening of a welding seam |
| 02/07/1978 | US4071934 CFT Box fin |
| 01/31/1978 | US4071048 Coated hollow metal tubes and process for producing coated hollow metal tubes processed by bending, pressing or punching |
| 01/31/1978 | US4070897 Method for producing an outer shell for overrunning clutches |
| 01/31/1978 | US4070886 Spiral pipe forming machine with device for aligning spiralling rolls |
| 01/31/1978 | US4070739 Manufacture of metal strip |
| 01/24/1978 | US4069638 Structure of lightweight bars and connector means therefore |
| 01/03/1978 | US4065953 Mechanical tube expander |
| 01/03/1978 | US4065950 Formation of articles |
| 12/27/1977 | US4065046 Method of making passage structures |
| 12/27/1977 | US4064729 Metal forming device |
| 12/27/1977 | US4064614 Method of making an improved hose and tube coupling |
| 12/20/1977 | US4063439 Apparatus for calibrating and surfacing tubes |
| 12/13/1977 | US4063058 Apparatus for making seam welded tubing |
| 12/06/1977 | US4061264 Method for producing helical seam pipes |
| 11/29/1977 | US4059979 Means for flaring openings in cylindrical bodies |
| 11/22/1977 | US4059147 Integral finned tube for submerged boiling applications having special O.D. and/or I.D. enhancement |
| 11/22/1977 | US4059004 Method of forming helically corrugated tubing |
| 11/22/1977 | US4058997 Apparatus for manufacturing tubes |
| 11/22/1977 | US4058996 Machine for the manufacture of helically wound metal duct or pipe |
| 11/08/1977 | US4056963 Means of determining extrusion temperatures |
| 10/18/1977 | US4054069 Elbow-making machine |
| 10/04/1977 | US4051704 Method for the manufacture of an ornamental head lug of the single unit type for use in bicycles |
| 10/04/1977 | US4051586 Method and apparatus for manufacturing a helically finned heat exchanger |
| 09/20/1977 | US4049481 For printed circuit boards; electrodeposition of zinc-tin alloy, diffusing copper by heat press lamination |
| 09/20/1977 | US4048834 Apparatus for forming serpentine heat exchangers |
| 09/20/1977 | US4048827 Apparatus for forming a large diameter pipe |
| 09/20/1977 | US4048826 Device for manufacturing rotationally symmetrical constructional parts |
| 09/13/1977 | US4047419 Method and apparatus for expanding spiralweld pipe |
| 09/13/1977 | US4047412 Method of making a pipe fitting and product |
| 09/06/1977 | US4046176 Winding machine for continuously manufacturing circular waveguides |
| 08/30/1977 | US4044447 Method of simultaneously drawing a number of wire members |
| 08/23/1977 | US4043171 Branch tool |
| 08/23/1977 | US4043167 Process and machine for finishing a 15° to 180° pipe bend which has been preformed on a pipe bending press |
| 08/23/1977 | US4043023 Method for making seamless pipe |
| 08/23/1977 | US4043015 Method of forming a header assembly |
| 08/02/1977 | US4038850 Method of and apparatus for producing baseball bats |
| 07/26/1977 | US4037446 Method of producing bright steel from rolled steel wire |