(19)
(11) EP 0 031 370 A1

(12)

(43) Date of publication:
08.07.1981 Bulletin 1981/27

(21) Application number: 80901492.0

(22) Date of filing: 07.07.1980
(51) International Patent Classification (IPC): 
G01C 9/ 06( . )
G01C 9/ 22( . )
(86) International application number:
PCT/US1980/000860
(87) International publication number:
WO 1981/000150 (22.01.1981 Gazette 1981/02)
(84) Designated Contracting States:
DE FR GB NL SE

(30) Priority: 06.07.1979 US 19790055227

(71) Applicant: GEIGER, Allen R.
Las Cruces, NM 88001 (US)

(72) Inventor:
  • GEIGER, Allen R.
    Las Cruces, NM 88001 (US)

   


(54) TILTMETER FOR GEOPHYSICAL PROSPECTING BY MEASUREMENT OF EARTH TIDES