(19)
(11) EP 0 413 691 A1

(12)

(43) Date of publication:
27.02.1991 Bulletin 1991/09

(21) Application number: 89901892.0

(22) Date of filing: 23.01.1989
(51) International Patent Classification (IPC): 
E04B 9/ 02( . )
F24F 13/ 28( . )
(86) International application number:
PCT/US1989/000264
(87) International publication number:
WO 1989/007182 (10.08.1989 Gazette 1989/18)
(84) Designated Contracting States:
DE FR GB IT SE

(30) Priority: 05.02.1988 US 19880152634
05.02.1988 US 19880152942
05.02.1988 US 19880152943

(71) Applicant: DONALDSON COMPANY, INC.
Minneapolis, MN 55431 (US)

(72) Inventors:
  • MONSON, Donald, R.
    West St. Paul, MN 55118 (US)
  • LEBLANC, James, A.
    Eden Prairie, MN 55344 (US)
  • TOKAR, Joseph, C.
    Apple Valley, MN 55124 (US)
  • ROCKLITZ, Gary, J.
    Burnsville, MN 55337 (US)
  • GILLINGHAM, Gary, R.
    Prior Lake, MN 55372 (US)

(74) Representative: Orr, William McLean, et al 
URQUHART-DYKES & LORD 8th Floor, Tower House Merrion Way
Leeds West Yorkshire, LS2 8PA
Leeds West Yorkshire, LS2 8PA (GB)

   


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