Portable air filtration unit
Description
FIG. 1 is a perspective view taken from the front _and left side of a portable air filtration unit showing _my new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a right side elevational view thereof; and
FIG. 6 is a top plan view thereof.
Referenced Cited
U.S. Patent Documents
D143097 | December 1945 | Schneider |
D180098 | April 1957 | Mueller |
D222687 | November 1971 | Adams |
D231571 | April 1974 | Parker |
D238979 | February 1976 | Perry et al. |
1196539 | August 1916 | Goldberg |
1298404 | March 1919 | Romanoff |
3861894 | January 1975 | Marsh |
Patent History
Patent number: D271338
Type: Grant
Filed: Mar 16, 1981
Date of Patent: Nov 8, 1983
Inventor: Hubert G. Dukowski (North Vancouver, British Columbia)
Primary Examiner: James R. Largen
Law Firm: Sughrue, Mion, Zinn, Macpeak and Seas
Application Number: 6/244,485
Type: Grant
Filed: Mar 16, 1981
Date of Patent: Nov 8, 1983
Inventor: Hubert G. Dukowski (North Vancouver, British Columbia)
Primary Examiner: James R. Largen
Law Firm: Sughrue, Mion, Zinn, Macpeak and Seas
Application Number: 6/244,485
Classifications
Current U.S. Class:
D29/6;
D23/149;
D29/7
International Classification: D2999; D2304;
International Classification: D2999; D2304;