Cover for a pressurized sand filter
Garrigos Ruiz August 24, 1
U.S. patent number D338,704 [Application Number 07/731,029] was granted by the patent office on 1993-08-24 for cover for a pressurized sand filter. This patent grant is currently assigned to Poltank, S.A.. Invention is credited to Robert Garrigos Ruiz.
| United States Patent | D338,704 |
| Garrigos Ruiz | August 24, 1993 |
Cover for a pressurized sand filter
Claims
The ornamental design for a cover for a pressurized sand filter, as shown and described.
| Inventors: | Garrigos Ruiz; Robert (Girona, ES) |
|---|---|
| Assignee: | Poltank, S.A.
(ES) |
| Appl. No.: | 07/731,029 |
| Filed: | July 16, 1991 |
| Current U.S. Class: | D23/209 |
| Field of Search: | ;220/DIG.16,DIG.17,601 ;210/86,123,138,151,189,195.1,254,268,288,290,792,797,807 ;D23/202-205,207-209 ;D9/452,459 |
References Cited [Referenced By]
U.S. Patent Documents
| D123648 | November 1940 | Holdren |
| D279267 | June 1985 | Morris |
| D295261 | April 1988 | Welter |
| 1214167 | January 1917 | Jewell |
| 1821726 | September 1931 | Saporta |
| 3381823 | May 1968 | Nash |
| 3736899 | June 1973 | Manski |
| 4048766 | September 1977 | Dantzer et al. |
Assistant Examiner: Tung; M. H.
Attorney, Agent or Firm: Steinberg & Raskin
Description
FIG. 1 is a top perspective view of a cover for pressurized vessels showing my new designs;
FIG. 2 is a bottom perspective view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a top plan view thereof, on a reduced scale; and,
FIG. 5 is a side view thereof, all sides being identical, on a reduced scale.
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