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Publication numberUSD225981 S
Publication typeGrant
Publication dateJan 16, 1973
Filing dateJan 26, 1970
Publication numberUS D225981 S, US D225981S, US-S-D225981, USD225981 S, USD225981S
InventorsCulver S. Brown
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Stair tread
US D225981 S
Images(2)
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Description  (OCR text may contain errors)

United States Patent 0 cc STAIR TREAD Culver S. Brown 4 Melville Ave.,

Palo Alto,

Filed Jan. 26, 1970, Ser. No. 21,177

Term of patent 14 years Int. Cl. D2502 US. Cl. D137 Des. 225,981 Patented Jan. 16, 1973 FIG. 1 is a perspective view showing the stair tread in combination with several other stair treads of identical design to form a spiral staircase, the broken line portions being shown for illustrative purposes only and form no part of the claim;

FIG. 2 is a top plan view;

FIG. 3 is a side elevation;

FIG. 4-is a bottom plan;

FIG. 5 is an end view taken from the right-hand side of FIGS. 2, 3 and 4;

FIG. 6 is an end view taken from the left-hand side of FIGS. 2, 3 and 4;

FIG. 7 is a sectional view taken at line 77 of FIG. 3;

FIG. 8 is a sectional view taken at lines 88 of FIG. 3.

8/1968 France 52187 4/1964 Great Britain 52-187 OTHER REFERENCES Sweets Architectural Catalog File, 1965, section 6g/ Duv, p. 3, item design #311.

A. HUGO WORD, Primary Examiner

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US7669813Jan 10, 2005Mar 2, 2010Seco Manufacturing Company, Inc.Multiple function geomatics pole support device