共 50 条
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- [23] RF patents, RF certificates for useful models, author's certificates, USSR patents for inventions in the field of welding Svarochnoe Proizvodstvo, 2001, (10): : 60 - 64
- [25] Inventor's certificates and patents on welding engineering Svarochnoe Proizvodstvo, 1992, (08):
- [26] Inventor's certificates and patents on welding engineering Svarochnoe Proizvodstvo, 1992, (07):
- [27] Inventor's certificates and patents on welding engineering Svarochnoe Proizvodstvo, 1992, (04):
- [28] Inventor's certificates and patents on welding engineering Svarochnoe Proizvodstvo, 1992, (02):
- [29] Inventor's certificates and patents on welding engineering Svarochnoe Proizvodstvo, 1993, (04):
- [30] PATENTS AND ADHESIVES - HOW PATENTS AFFECT ADHESIVES FIELD ADHESIVES AGE, 1967, 10 (05): : 32 - &