METHOD AND APPARATUS FOR REGRINDING STEP DRILLS - Patent 0103573

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EP 0 103 573 A1

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(43)	Date of publication:
	28.03.1984 Bulletin 1984/13

(21)	Application number: 82901329.0

(22)	Date of filing: 10.03.1982

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International Patent Classification (IPC):

B23Q 15/ 02^{( . )}

B24B 3/ 24^{( . )}

(86)	International application number:
	PCT/US1982/000301

(87)	International publication number:
	WO 1983/003150 (15.09.1983 Gazette 1983/21)

(84)	Designated Contracting States:
	DE FR GB NL SE

(71)	Applicant: THE BOEING COMPANY
	Seattle Washington 98124 (US)

(72)	Inventor:
	WEBSTER, Frank Robert Tukwila, WA 98168 (US)

(74)	Representative: Hoijtink, Reinoud, et al
	Arnold & Siedsma, Advocaten en Octrooigemachtigden, Sweelinckplein 1 NL-2517 GK Den Haag NL-2517 GK Den Haag (NL)

(54)	METHOD AND APPARATUS FOR REGRINDING STEP DRILLS