发明授权
- 专利标题: Magnetic annunciator
- 专利标题(中): 磁性报警器
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申请号: US23026951申请日: 1951-06-07
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公开(公告)号: US2740955A公开(公告)日: 1956-04-03
- 发明人: BARRETT EDWARD L
- 申请人: DONALD B ALEXANDER , EDGAR R BOURKE , HENRY T CHAMBERLAIN , JOHN F MANNION , ERNEST W SCHNEIDER , WALTER A WADE , CHARLES S VRTIS
- 专利权人: Donald B Alexander,Edgar R Bourke,Henry T Chamberlain,John F Mannion,Ernest W Schneider,Walter A Wade,Charles S Vrtis
- 当前专利权人: Donald B Alexander,Edgar R Bourke,Henry T Chamberlain,John F Mannion,Ernest W Schneider,Walter A Wade,Charles S Vrtis
- 优先权: US23026951 1951-06-07
- 主分类号: G08B5/30
- IPC分类号: G08B5/30
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