Portable air charge-discharge machine

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Description

FIG. 1 is a perspective view of portable air charge-discharge machine showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a perspective view thereof when in use; and,

FIG. 9 is an exploded perspective view thereof when in use.

The broken-line showing of environmental structure in FIGS. 8 and 9 is for illustrative pursposes only and forms no part of the claimed design.

Referenced Cited
U.S. Patent Documents
2986765 June 1961 Wolf et al.
3816983 June 1974 Sawada et al.
4636230 January 13, 1987 Fan
Patent History
Patent number: D414254
Type: Grant
Filed: May 22, 1998
Date of Patent: Sep 21, 1999
Assignee: Bulton Enterprises Co., Ltd.
Inventor: Hsin-Tsai Wu (Taipei)
Primary Examiner: Lisa Lichtenstein
Law Firm: Brinks Hofer Gilson & Lione
Application Number: 0/88,463
Classifications
Current U.S. Class: Air Treatment (D23/355)
International Classification: 2304;