Title:
電池の有効使用寿命算出方法および携帯型ガス警報器
Document Type and Number:
Japanese Patent JP4223782
Kind Code:
B2
Inventors:
Takanori Tsukahara
Kizaki Shoji
Masayuki Uchida
Kizaki Shoji
Masayuki Uchida
Application Number:
JP2002297618A
Publication Date:
February 12, 2009
Filing Date:
October 10, 2002
Export Citation:
Assignee:
RIKEN KEIKI Co.,Ltd.
International Classes:
G08B21/14
Domestic Patent References:
| JP2002116169A | ||||
| JP2002093465A | ||||
| JP2001250179A | ||||
| JP9139236A | ||||
| JP6187580A | ||||
| JP4145384A |
Attorney, Agent or Firm:
Masahiko Oi