(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)7G01C 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