Title:
【発明の名称】開口器具
Document Type and Number:
Japanese Patent JP3339813
Kind Code:
B2
Inventors:
Takashi Akihiro
Application Number:
JP36410497A
Publication Date:
October 28, 2002
Filing Date:
December 17, 1997
Export Citation:
Assignee:
Takashi Akihiro
International Classes:
A61B1/24; (IPC1-7): A61B1/24
Domestic Patent References:
| JP657310A | ||||
| JP4992090U | ||||
| JP55156702U |
Other References:
【文献】米国特許4889490(US,A)
【文献】米国特許5199872(US,A)
【文献】米国特許4053984(US,A)
【文献】米国特許5199872(US,A)
【文献】米国特許4053984(US,A)
Attorney, Agent or Firm:
Takashi Matsuura (1 person outside)