Lining predominantly with wood

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

Industries

Patents Grantslast 30 patents

Information Patent Grant
Helical segmental lining
- Patent number 10,746,022
- Issue date Aug 18, 2020
- Behzad Khorshidi
- E21 - EARTH DRILLING MINING
Information Patent Grant
Mine support system
- Patent number 5,547,317
- Issue date Aug 20, 1996
- HL&H Timber Products (Pty) Limited
- Mark Howell
- E21 - EARTH DRILLING MINING
Information Patent Grant
Prestressed tunnel lining
- Patent number 4,615,644
- Issue date Oct 7, 1986
- Mole Constuction Company
- Renon M. Hoge
- E21 - EARTH DRILLING MINING
Information Patent Grant
3297292
- Patent number 3,297,292
- Issue date Jan 10, 1967
- E21 - EARTH DRILLING MINING
Information Patent Grant
3173644
- Patent number 3,173,644
- Issue date Mar 16, 1965
- E21 - EARTH DRILLING MINING
Information Patent Grant
1876205
- Patent number 1,876,205
- Issue date Sep 6, 1932
- E21 - EARTH DRILLING MINING
Information Patent Grant
1856682
- Patent number 1,856,682
- Issue date May 3, 1932
- E21 - EARTH DRILLING MINING
Information Patent Grant
1293222
- Patent number 1,293,222
- Issue date Feb 4, 1919
- E21 - EARTH DRILLING MINING
Information Patent Grant
1223367
- Patent number 1,223,367
- Issue date Apr 24, 1917
- E21 - EARTH DRILLING MINING
Information Patent Grant
1193233
- Patent number 1,193,233
- Issue date Aug 1, 1916
- E21 - EARTH DRILLING MINING