of concrete, cement or asbestos-cement

This industry / category may be too specific. Please go to a parent level for more data

Industries

Patents Grantslast 30 patents

Information Patent Grant
Method of reinforcing a cylindrical pipeline and prefabricated plat...
- Patent number 7,347,227
- Issue date Mar 25, 2008
- Freyssinet International (STUP)
- Ivica Zivanovic
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Device for joining of pipelines
- Patent number 4,971,307
- Issue date Nov 20, 1990
- Den Norske Stats Oljeselskap A.S.
- Kai Killerud
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Refractory pipe fittings and production thereof
- Patent number 4,102,972
- Issue date Jul 25, 1978
- Tomiji Tarukawa
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
2475389
- Patent number 2,475,389
- Issue date Jul 5, 1949
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
2267817
- Patent number 2,267,817
- Issue date Dec 30, 1941
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
1497583
- Patent number 1,497,583
- Issue date Jun 10, 1924
- E03 - WATER SUPPLY SEWERAGE