Vacuum pump

- Mitsubishi Denki K.K.
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Description

FIG. 1 is a front elevational view of a vacuum pump showing our design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevational view thereof; and

FIG. 6 is a right side elevational view thereof.

Referenced Cited
U.S. Patent Documents
D124842 January 1941 Price
D162502 March 1951 Zimmer, Jr.
D294361 February 23, 1988 Williams
3213797 October 1965 McMahan
Patent History
Patent number: D315912
Type: Grant
Filed: Mar 14, 1989
Date of Patent: Apr 2, 1991
Assignee: Mitsubishi Denki K.K. (Tokyo)
Inventors: Mitsuhiro Nishida (Fukuoka), Kozaburo Fujii (Fukuoka), Nobuyuki Kondoh (Kamakura), Yoshinori Abe (Kamakura)
Primary Examiner: Louis S. Zarfas
Assistant Examiner: R. T. Seifert
Law Firm: Sughrue, Mion, Zinn Macpeak & Seas
Application Number: 7/338,061
Classifications
Current U.S. Class: Pump Or Compressor (D15/7)