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Description

FIG. 1 is a perspective elevation from above and one side and one end;

FIG. 2 is an elevation of the other end both ends being identical;

FIG. 3 is an elevation of the other side, both sides being identical;

FIG. 4 is an underplan.

Referenced Cited
U.S. Patent Documents
3974612 August 17, 1976 Karner
Foreign Patent Documents
465102 January 1914 FRX
Patent History
Patent number: D252160
Type: Grant
Filed: Feb 6, 1976
Date of Patent: Jun 19, 1979
Assignee: Dufaulite Developments Limited (Cambridgeshire)
Inventors: Peter J. Thwaites (Eltisley), Dennis W. Green (Stapleford)
Primary Examiner: A. Hugo Word
Attorney: William A. Drucker
Application Number: 5/655,798
Classifications
Current U.S. Class: D25/88; D25/73; D25/87; D25/91
International Classification: D2501;