Title:
【考案の名称】光学式粉塵センサ
Document Type and Number:
Japanese Patent JP2505282
Kind Code:
Y2
Inventors:
Hiroyuki Sato
Application Number:
JP7449290U
Publication Date:
July 24, 1996
Filing Date:
July 13, 1990
Export Citation:
Assignee:
Ricoh Elemex Co., Ltd.
International Classes:
G01N15/14; G01N15/06; G01N21/15; G01N21/53; (IPC1-7): G01N21/53; G01N15/06
Domestic Patent References:
| JP5329697A | ||||
| JP5716955U | ||||
| JP5412388U |
Attorney, Agent or Firm:
Shunsuke Nakao