共 50 条
- [7] RF patents, RF certificates for useful models, authors certificates, USSR patents for inventions in the field of welding Svarochnoe Proizvodstvo, 2001, (08): : 60 - 62
- [8] RF patents, RF certificates for useful models, authors certificates, USSR patents for inventions in the field of welding Svarochnoe Proizvodstvo, 2001, (07): : 62 - 64