发明授权
US3027643A Combination head supported water basin or tray, cheek and lip retractor and vacuum saliva ejector 失效
组合头支撑水盆或托盘,脸颊和唇牵引器和真空唾液喷射器

  • 专利标题: Combination head supported water basin or tray, cheek and lip retractor and vacuum saliva ejector
  • 专利标题(中): 组合头支撑水盆或托盘,脸颊和唇牵引器和真空唾液喷射器
  • 申请号: US85624659
    申请日: 1959-11-30
  • 公开(公告)号: US3027643A
    公开(公告)日: 1962-04-03
  • 发明人: RAYMOND COHEN
  • 申请人: RAYMOND COHEN
  • 专利权人: Cohen Raymond
  • 当前专利权人: Cohen Raymond
  • 优先权: US85624659 1959-11-30
  • 主分类号: A61C17/06
  • IPC分类号: A61C17/06 A61C17/08 A61C17/14
Combination head supported water basin or tray, cheek and lip retractor and vacuum saliva ejector
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