✦ LIBER ✦
Method and apparatus for the production of sonic or ultrasonic waves on a surface: Hellmut Schneider US Patent 3,503,804 (1970)
- Book ID
- 107866418
- Publisher
- Elsevier Science
- Year
- 1971
- Tongue
- English
- Weight
- 126 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0041-624X
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