(19)
(11)
EP 1 325 283 A1
(12)
(43)
Date of publication:
09.07.2003
Bulletin 2003/28
(21)
Application number:
00966564.7
(22)
Date of filing:
30.09.2000
(51)
International Patent Classification (IPC)
7
:
G01C
15/00
(86)
International application number:
PCT/KR0001/094
(87)
International publication number:
WO 0202/5210
(
28.03.2002
Gazette 2002/12)
(84)
Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI
(30)
Priority:
23.09.2000
KR 2000055999
(71)
Applicant:
SHT Co. Ltd.
Seoul, 151-742 (KR)
(72)
Inventor:
Tak, Seung-Ho
Seoul 134-768 (KR)
(74)
Representative:
Dunlop, Hugh Christopher et al
R G C Jenkins &Co.,26 Caxton Street
London SW1H 0RJ
London SW1H 0RJ (GB)
(54)
LEVEL AND/OR VERTICALITY INDICATOR USING LASER BEAMS