by making use of rods

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Patents Grantslast 30 patents

Information Patent Grant
Automatic machine for providing corrugated sheet-like elements
- Patent number 10,265,921
- Issue date Apr 23, 2019
- GRIFAL S.P.A.
- Fabio Angelo Gritti
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method and apparatus for making pipe sections in materials
- Patent number 4,264,390
- Issue date Apr 28, 1981
- General Motors Corporation
- David E. Armstrong
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
3667268
- Patent number 3,667,268
- Issue date Jun 6, 1972
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...