USD181664S - Dust filter - Google Patents
Dust filter Download PDFInfo
- Publication number
- USD181664S USD181664S US D181664 S USD181664 S US D181664S
- Authority
- US
- United States
- Prior art keywords
- dust filter
- united states
- dust
- filter
- perspecttlive
- Prior art date
Links
- 239000000428 dust Substances 0.000 title description 8
- 239000000443 aerosol Substances 0.000 description 2
Images
Description
fies. 181,664 Patented Dec. 10, 1957 United States Patent @fitice DUST FILTER Hans Miiller, Zurich, Switzerland, assignor to Aerosol Corporation T. R., Vaduz, Liechtenstein Application October 3, 1955, Serial No. 38,214
Term of patent 7 years (Cl. D46--1) The figure Cils a perspecttlive view of a dust filter, show- References Cited in the file of this patent mg my new esign in w ich the side not shown is like the side shown- UNITED STATES PATENTS I claim: 1,871,908 Orem Aug. 16, 1932 July 15, 1941 2,249,020 McFarlin The ornamental design for a dust filter, as shown and described.
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