Title:
Air precleaner
United States Patent D422069


Inventors:
Decker, William K. (Cambridge, WI)
Application Number:
29/091054
Publication Date:
03/28/2000
Filing Date:
07/22/1998
Assignee:
American Farm Implement & Specialty, Inc. (Janesville, WI)
Primary Class:
Field of Search:
D23/365, 55/510, 261/91
View Patent Images:
US Patent References:
5022903Air-precleanerJune, 1991Decker
4547207Air cleaning deviceOctober, 1985Petersen
4197102Air pre-cleanerApril, 1980Decker
4135897Air cleanerJanuary, 1979Gondek
4013137Engine air intake systemMarch, 1977Petersen
3973937Engine air precleanerAugust, 1976Petersen
3740932AIR PRE-CLEANERJune, 1973Bersheim
2417130Air cleaning apparatusApril, 1947Russell



Other References:
Advertising for Best-Ex Centri Air Pre-Cleaners, by Best-Ex, Inc. before 1990.
Advertisement, Price List and Specifications for Turbo.RTM. Pre-Cleaners by Sureco, Mar. 1, 1987.
Exhibit 1: Photographs and photocopy of air precleaner on the market in the United States more than one year before filing date of the present application.
Primary Examiner:
LICHTENSTEIN, LISA P
Attorney, Agent or Firm:
HARRY C ENGSTROM (MADISON, WI, US)
Claims:
1. What is claimed is the ornamental design for an air precleaner, as shownand described.

Description:

FIG. 1 is a perspective view of an air precleaner showing my new design.

FIG. 2 is a top plan view thereof.

FIG. 3 is a side view thereof; and,

FIG. 4 is a bototm view thereof.