(19)
(11) EP 0 051 665 A1

(12)

(43) Date of publication:
19.05.1982 Bulletin 1982/20

(21) Application number: 81901446.0

(22) Date of filing: 05.05.1981
(51) International Patent Classification (IPC): 
F04B 47/ 04( . )
(86) International application number:
PCT/US1981/000591
(87) International publication number:
WO 1981/003206 (12.11.1981 Gazette 1981/27)
(84) Designated Contracting States:
CH DE FR GB LI NL SE

(30) Priority: 09.05.1980 US 19800148380
03.09.1980 US 19800183958

(71) Applicant: GILBERTSON, Thomas A.
San Francisco, CA 94105 (US)

(72) Inventor:
  • GILBERTSON, Thomas A.
    San Francisco, CA 94105 (US)

   


(54) OIL WELL PUMP DRIVING UNIT