Dust sensor device

- U.S. Philips Corporation
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Description

FIG. 1 is a front, left side, perspective view showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D209573 December 1967 Leinfelt
5136750 August 11, 1992 Takashima et al.
5163202 November 17, 1992 Kawakami et al.
5233682 August 3, 1993 Abe et al.
Patent History
Patent number: D345707
Type: Grant
Filed: Dec 18, 1992
Date of Patent: Apr 5, 1994
Assignee: U.S. Philips Corporation (New York, NY)
Inventor: Jack Alister (Grijpskerk)
Primary Examiner: Alan P. Douglas
Assistant Examiner: Antoine D. Davis
Attorney: Jack E. Haken
Application Number: 0/2,740
Classifications
Current U.S. Class: Chemical (12) (D10/81); For Vacuum Cleaner (D32/31)