Hydroponic trough

- Control Data Corporation
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Description

FIG. 1 is a perspective view of a hydroponic trough showing our new design, shown broken-away to indicate indeterminate length;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and

FIG. 5 is an end elevational view thereof, the opposite end being identical in appearance.

Referenced Cited
U.S. Patent Documents
D247357 February 28, 1978 Gray
D255886 July 15, 1980 Flynn
D262443 December 29, 1981 Harn, Jr.
D263291 March 9, 1982 Paton
D265387 July 13, 1982 Nattrass
D265893 August 24, 1982 Whiting
2659180 November 1953 Acton
Other references
  • Van Huffel catalogue L-56 (1961), p. 42 #2197/109-Moulding.
Patent History
Patent number: D287233
Type: Grant
Filed: Apr 11, 1984
Date of Patent: Dec 16, 1986
Assignee: Control Data Corporation (Minneapolis, MN)
Inventors: Kenneth R. Foote (Mahtomedi, MN), William M. Miller (Maplewood, MN), Eion G. Scott (St. Paul, MN)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Brian N. Vinson
Attorneys: Joseph A. Genovese, Robert M. Angus
Application Number: 6/599,103