Hot water tank helical coil cleaner
Description
FIG. 1 is a perspective view of a hot water tank helical coil cleaner 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 top plan view thereof;
FIG. 5 is a bottom plan view thereof.
Referenced Cited
U.S. Patent Documents
D234743 | April 1975 | Andersen |
1500852 | July 1924 | Shepard |
1870333 | August 1932 | Kadavy |
2610347 | September 1952 | Kleiner |
Patent History
Patent number: D307961
Type: Grant
Filed: Feb 25, 1987
Date of Patent: May 15, 1990
Inventor: Edward B. Howell (Pocatello, ID)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Lavone D. Tabor
Attorney: Leon Gilden
Application Number: 7/18,978
Type: Grant
Filed: Feb 25, 1987
Date of Patent: May 15, 1990
Inventor: Edward B. Howell (Pocatello, ID)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Lavone D. Tabor
Attorney: Leon Gilden
Application Number: 7/18,978
Classifications
Current U.S. Class:
Laundering, Cleaning, Or Drying Tools Or Implements (D32/35)