序号 | 专利名 | 申请号 | 申请日 | 公开(公告)号 | 公开(公告)日 | 发明人 |
---|---|---|---|---|---|---|
101 | Adler | US2821954D | US2821954A | 1958-02-04 | ||
102 | Generator for sonic and ultrasonic vibrations | US35311553 | 1953-05-05 | US2800100A | 1957-07-23 | GUT BOUCHER RAYMOND MARCEL |
103 | Supersonic whistle for code communication | US59350045 | 1945-05-12 | US2571640A | 1951-10-16 | WILLMAN RICHARD C |
104 | Acoustic device | US64927946 | 1946-02-21 | US2532229A | 1950-11-28 | HORSLEY CAPERTON B |
105 | Acoustic generator | US54813344 | 1944-08-04 | US2519619A | 1950-08-22 | YELLOTT JOHN I; SAVORY LEONARD E |