MULTI-STAGE ELECTRON GUN HAVING AN ELECTROSTATIC CAVITY - Patent 0902959

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EP 0 902 959 A1

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(43)	Date of publication:
	24.03.1999 Bulletin 1999/12

(21)	Application number: 97925708.0

(22)	Date of filing: 20.05.1997

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International Patent Classification (IPC):

H01J 3/ 02^{( . )}

H01J 23/ 06^{( . )}

(86)	International application number:
	PCT/US1997/008727

(87)	International publication number:
	WO 1997/044805 (27.11.1997 Gazette 1997/51)

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

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Priority:

22.05.1996 US 19960651627

(71)	Applicants:
	Schwartz, Ansel M. Pittsburg, Pennsylvenia 15217 (US) Mako, Frederick Michael Fairfax Station, Virginia 22039 (US)

(72)	Inventors:
	MAKO, Frederick, M. Fairfax Station, VA 22039 (US) FISHER, Amnon Alexandria, VA 22308 (US)

(74)	Representative: Jones, Michael Raymond
	Haseltine Lake & Co. Temple Gate House Temple Gate Bristol BS1 6PT Bristol BS1 6PT (GB)

(54)	MULTI-STAGE ELECTRON GUN HAVING AN ELECTROSTATIC CAVITY