DEVICE FOR MAKING HOLES IN SOFT POROUS MATERIAL - Patent 0077362

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EP 0 077 362 A1

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(43)	Date of publication:
	27.04.1983 Bulletin 1983/17

(21)	Application number: 82901316.0

(22)	Date of filing: 23.04.1982

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International Patent Classification (IPC):

B23B 51/ 00^{( . )}

(86)	International application number:
	PCT/SE1982/000131

(87)	International publication number:
	WO 1982/003596 (28.10.1982 Gazette 1982/26)

(84)	Designated Contracting States:
	DE FR

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Priority:

24.04.1981 SE 19810002628

(71)	Applicant: TELEFONAKTIEBOLAGET L M ERICSSON
	S-126 25 Stockholm (SE)

(72)	Inventors:
	LEGERIUS, Bengt Efraim S-611 65 Nyköping (SE) SIEBERT, Hans Werner S-613 00 Oxelösund (SE)

(74)	Representative: Johnsson, Helge, et al
	Telefonaktiebolaget L M Ericsson S-126 25 Stockholm S-126 25 Stockholm (SE)

(54)	DEVICE FOR MAKING HOLES IN SOFT POROUS MATERIAL