(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