Water trough

- H. H. Robertson Company
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Description

FIG. 1 is a top plan view of a water trough showing my new design;

FIG. 2 is a perspective view taken from the bottom and rear thereof; and

FIG. 3 is a perspective view taken from the top and front thereof.

Referenced Cited
U.S. Patent Documents
D149151 March 1948 Southworth
D162476 March 1951 Saunders et al.
D194784 March 1963 Voorhis
D203311 December 1965 McNair
D211097 May 1968 Strauss
D230035 January 1974 Bowman
D236511 August 1975 Bunger
D239724 April 1976 Kuzara et al.
D250962 January 30, 1979 Bonsack
1329288 January 1920 Carpenter
1824035 September 1931 Cromwell
2387664 October 1945 Kubista
2490982 December 1949 Rodman
3133524 May 1964 Martin
3841268 October 1974 Bunger
Patent History
Patent number: D254754
Type: Grant
Filed: Dec 30, 1977
Date of Patent: Apr 15, 1980
Assignee: H. H. Robertson Company (Pittsburgh, PA)
Inventor: James M. Harrison (Shrewsbury)
Primary Examiner: James R. Largen
Attorneys: Harry B. Keck, George E. Manias
Application Number: 5/866,474
Classifications
Current U.S. Class: D30/16
International Classification: D3003;