Construction of forming members having more than one groove

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Patents Grantslast 30 patents

Information Patent Grant
Pipe bend die unit
- Patent number 10,675,667
- Issue date Jun 9, 2020
- SANGO CO., LTD.
- Kentaro Nozu
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Pipe bend die unit, and pipe bending apparatus having the unit
- Patent number 9,901,968
- Issue date Feb 27, 2018
- SANGO CO., LTD.
- Kentaro Nozu
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Pipe bending machine
- Patent number 4,537,053
- Issue date Aug 27, 1985
- Rigobert Schwarze
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Return elbow and crossover bender
- Patent number 4,085,608
- Issue date Apr 25, 1978
- Burr Oak Tool & Gauge Company
- Lawrence A. Franks
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
3155139
- Patent number 3,155,139
- Issue date Nov 3, 1964
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
3147792
- Patent number 3,147,792
- Issue date Sep 8, 1964
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...