U.S. patent number D429,004 [Application Number D/054,175] was granted by the patent office on 2000-08-01 for retaining wall block. This patent grant is currently assigned to Handy-Stone Corporation. Invention is credited to Peter J. Blomquist, Todd P. Strand.
United States Patent | D429,004 |
Strand , et al. | August 1, 2000 |
Inventors: | Strand; Todd P. (Marine on St. Croix, MN), Blomquist; Peter J. (Lake Elmo, MN) |
---|---|
Assignee: | Handy-Stone Corporation (North
St. Paul, MN) |
Appl. No.: | D/054,175 |
Filed: | May 10, 1996 |
Application Number | Filing Date | Patent Number | Issue Date | ||
---|---|---|---|---|---|
026710 | Aug 4, 1994 | ||||
Current U.S. Class: | D25/113 |
Current International Class: | 2501 |
Field of Search: | ;D25/112-118 ;52/596-598,607-609,611 ;405/284,286 |
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D346667 | May 1994 | Blomquist et al. |
D350402 | September 1994 | Pribyl et al. |
1419805 | June 1922 | Bigler |
1795451 | March 1931 | Sharpe |
2313363 | March 1943 | Schmitt |
4229123 | October 1980 | Heinzmann |
4335549 | June 1982 | Dean, Jr. |
5017049 | May 1991 | Sievert |
5031376 | July 1991 | Bender et al. |
5062610 | November 1991 | Woolford et al. |
Minitalus.sup.MC Universel.sup.MC, Permacon, Apr. 1993. . Aztech Wall System, "Tradition and Technology", Block Systems, Incorporated, 1989. . Precast Concrete Retaining Walls, RISI Stone Ltd., 1988. . Windsor Stone.RTM., Block Systems, Inc. 1991. . Tech Spec.RTM., Diamond Wall System, Anchor Block/Oscar Roberts, Sep. 1988. . Garden Wall.TM., KeyStone.TM. Retaining Wall Systems, 1991.. |
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