(19)

(11)

EP 0 052 608 A1

(12)

(43) Date of publication: 02.06.1982 Bulletin 1982/22 (21) Application number: 81900744.0 (22) Date of filing: 11.09.1980

(51) International Patent Classification (IPC):  G10D 13/ 02( . ) (86) International application number: PCT/US1980/001185 (87) International publication number: WO 1981/003564 (10.12.1981 Gazette 1981/29)

(84) Designated Contracting States: AT CH DE FR GB LI LU NL SE (30) Priority: 27.05.1980 US 19800153717 (71) Applicant: ROSE, Calvin D. Stamford, CT 06905 (US)	(72) Inventor: ROSE, Calvin D. Stamford, CT 06905 (US)