(19)

(11)

EP 0 079 334 A1

(12)

(43) Date of publication: 25.05.1983 Bulletin 1983/21 (21) Application number: 81901838.0 (22) Date of filing: 18.05.1981

(51) International Patent Classification (IPC):  H03H 9/ 52( . ) H03H 11/ 04( . ) H03H 9/ 56( . ) (86) International application number: PCT/US1981/000656 (87) International publication number: WO 1982/004167 (25.11.1982 Gazette 1982/28)

(84) Designated Contracting States: CH DE FR GB LI NL SE (71) Applicant: SPENCE, Lewis C. Riviera Beach, FL 33404 (US)	(72) Inventor: SPENCE, Lewis C. Riviera Beach, FL 33404 (US) (74) Representative: Freed, Arthur Woolf  MARKS & CLERK, 57-60 Lincoln's Inn Fields London WC2A 3LS London WC2A 3LS (GB)