A METHOD AND AN APPARATUS FOR CHECKING THE CONDITION OF A PROTECTIVE GLASS IN CONNECTION WITH LASER MACHINING - Patent 1146986

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EP 1 146 986 A1

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(43)	Date of publication:
	24.10.2001 Bulletin 2001/43

(21)	Application number: 99925508.6

(22)	Date of filing: 13.04.1999

(51)	International Patent Classification (IPC)⁷: B23K 26/00

(86)	International application number:
	PCT/SE9900/592

(87)	International publication number:
	WO 9959/762 (25.11.1999 Gazette 1999/47)

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

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Priority:

20.05.1998 SE 9801780

(71)	Applicant: Permanova Lasersystem AB
	S-831 46 Östersund (SE)

(72)	Inventors:
	ROOS, Sven-Olov S-443 34 Lerum (SE) TORSTENSSON, Per-Arne S-434 95 Kungsbacka (SE)

(74)	Representative: Olsson, Gunnar
	Nobel Biocare AB,Box 5190 402 26 Göteborg 402 26 Göteborg (SE)

(54)	A METHOD AND AN APPARATUS FOR CHECKING THE CONDITION OF A PROTECTIVE GLASS IN CONNECTION WITH LASER MACHINING