(19)
(11)
EP 0 079 888 A1
(12)
(43)
Date of publication:
01.06.1983
Bulletin 1983/22
(21)
Application number:
81901850.0
(22)
Date of filing:
28.05.1981
(51)
International Patent Classification (IPC):
E01C
23/
082
( . )
E02F
3/
76
( . )
(86)
International application number:
PCT/US1981/000730
(87)
International publication number:
WO 1982/004275
(
09.12.1982
Gazette 1982/29)
(84)
Designated Contracting States:
AT DE FR GB NL SE
(71)
Applicant:
LADWIG, Lawrence Orrin
Fountain Valley, CA 92708 (US)
(72)
Inventor:
LADWIG, Lawrence Orrin
Fountain Valley, CA 92708 (US)
(54)
DIRT ROAD SMOOTHING APPARATUS