(19)
(11) EP 1 274 529 A1

(12)

(43) Date of publication:
15.01.2003 Bulletin 2003/03

(21) Application number: 00918293.2

(22) Date of filing: 20.03.2000
(51) International Patent Classification (IPC)7: B23B 3/00
(86) International application number:
PCT/US0007/711
(87) International publication number:
WO 0107/0438 (27.09.2001 Gazette 2001/39)
(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

(71) Applicants:
  • Koelsch, Ronald
    Roscommon, MI 48653 (US)
  • Koelsch, Robert
    Scottsdale, AZ 85254 (US)

(72) Inventors:
  • Koelsch, Ronald
    Roscommon, MI 48653 (US)
  • Koelsch, Robert
    Scottsdale, AZ 85254 (US)

(74) Representative: Dearing-Lambert, Peter Richard 
Piper Lambert120 Queens Road
Leicester LE2 3FL
Leicester LE2 3FL (GB)

   


(54) DEVICE FOR MONITORING AND CALIBRATING OXIDE CHARGE MEASUREMENT EQUIPMENT AND METHOD THEREFOR