Heat pump
Latest H-Tech, Inc. Patents:
Description
FIG. 1 is a front perspective view of a heat pump 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; and,
FIG. 7 is a bottom plan view thereof.
Claims
The ornamental design for a heat pump, as shown and described.
Referenced Cited
U.S. Patent Documents
Other references
D219449 | December 1970 | Ortega |
3722845 | March 1973 | Unger |
D244293 | May 10, 1977 | Carluccio |
4261418 | April 14, 1981 | Helt et al. |
D299528 | January 24, 1989 | Kessler et al. |
D306642 | March 13, 1990 | Chang et al. |
D353883 | December 27, 1994 | Blanchard |
D434480 | November 28, 2000 | Caronna et al. |
D449094 | October 9, 2001 | Caronna et al. |
D454186 | March 5, 2002 | Caronna et al. |
D454388 | March 12, 2002 | Mutchnik et al. |
D503784 | April 5, 2005 | Tucker et al. |
D513528 | January 10, 2006 | Tucker et al. |
- U.S. Appl. No. 60/721,479 “Heat Pump for Low Ambient Air Temperature Operations,” Filed Sep. 28, 2005.
Patent History
Patent number: D539882
Type: Grant
Filed: Sep 28, 2005
Date of Patent: Apr 3, 2007
Assignee: H-Tech, Inc. (Wilmington, DE)
Inventor: Gang Li (Clemmons, NC)
Primary Examiner: Brian N Vinson
Attorney: McCarter & English, LLP
Application Number: 29/239,290
Type: Grant
Filed: Sep 28, 2005
Date of Patent: Apr 3, 2007
Assignee: H-Tech, Inc. (Wilmington, DE)
Inventor: Gang Li (Clemmons, NC)
Primary Examiner: Brian N Vinson
Attorney: McCarter & English, LLP
Application Number: 29/239,290
Classifications
Current U.S. Class:
Air Conditioner (27) (D23/351)