Root barrier
Description
FIG. 1 is a front perspective of the root barrier;
FIG. 2 is an enlarged, fragmentary perspective view thereof;
FIG. 3 is an enlarged, fragmentary, opposite end perspective view thereof;
FIG. 4 is a top plan view thereof with the bottom plan view being a mirror image;
FIG. 5 is a front view thereof; and,
FIG. 6 is a back view thereof.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
2758419 | August 1956 | Schmitz |
2769277 | November 1956 | Keelor |
2859558 | November 1958 | Hollom |
3415013 | December 1968 | Galbraith |
3438146 | April 1969 | Nickerson |
3951294 | April 20, 1976 | Wilson |
4019279 | April 26, 1977 | Moorman et al. |
4457102 | July 3, 1984 | Ploeger, Jr. |
4665645 | May 19, 1987 | Schau, III et al. |
4955156 | September 11, 1990 | Williams |
4995191 | February 26, 1991 | Davis |
5070642 | December 10, 1991 | Albrecht |
2241227 | March 1973 | DEX |
Patent History
Patent number: D352871
Type: Grant
Filed: Aug 6, 1993
Date of Patent: Nov 29, 1994
Inventors: Michael E. Miller (San Rafael, CA), George R. McCord (Berkeley, CA)
Primary Examiner: Wallace R. Burke
Assistant Examiner: H. Baynham
Attorney: James J. Leary
Application Number: 0/11,535
Type: Grant
Filed: Aug 6, 1993
Date of Patent: Nov 29, 1994
Inventors: Michael E. Miller (San Rafael, CA), George R. McCord (Berkeley, CA)
Primary Examiner: Wallace R. Burke
Assistant Examiner: H. Baynham
Attorney: James J. Leary
Application Number: 0/11,535
Classifications
Current U.S. Class:
D 8/1