This application is a continuation of application Ser. No. 08/952,161, filed Nov. 12, 1997, now abandoned, the disclosure of which is hereby incorporated herein by reference in its entirety.
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---|---|---|---|
2024905 | Bard | Dec 1935 | |
2043863 | Nordstrom | Jun 1936 | |
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3896857 | Turner et al. | Jul 1975 | |
4275763 | Fahrig | Jun 1981 | |
4276905 | Lourdeaux | Jul 1981 | |
4350322 | Mueller | Sep 1982 | |
4498498 | Martinez-Vera et al. | Feb 1985 | |
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2 305 713 | Apr 1997 | GB |
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S54-146932 | Oct 1979 | JP |
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S56-63178 | May 1981 | JP |
S58-160672 | Oct 1982 | JP |
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Entry |
---|
API, Specification for Pipeline Valves (Gate, Plug, Ball, and Check Valves), API Specification 6D, Twenty-First Edition, Mar. 31, 1994. |
API, Specification for Pipline Valves (Gate, Plug, Ball, and Check Valves), API Specification 6D, Twenty-First Edition, Mar. 31, 1994, Supplement 1 (Dec. 1, 1996). |
Taper Plug Valves Pressure Design; Christensens Valve (Brochure). |
Lubricated Taper Plug Valves; Product Group; 9 Catalogue No. 184 (Brochure). |
AZ Special Plug Valves With Flushing Device; AZ Armaturen (Brochure). |
Nordstrom Steel Plug Valves; Nordstrom Valves, Inc. V-102-R2A (Brochures). |
Super-H Pressure Balanced Plug Valve; Serck Audco Valves (Brochures). |
International Search Report PCT/GB96/02338. |
Number | Date | Country | |
---|---|---|---|
Parent | 08/952161 | Nov 1997 | US |
Child | 09/521538 | US |